Archives

Klosterhuset – Vreta Kloster

An exhibition in itself
Architecture, Cultural Heritage
Accessibility, Building Preservation & Restoration, Culture, Renovation & Transformation
Client: Svenska kyrkan
Location: Linköping
Assignment years: Was inaugurated 2019
Construction period: Monastery house 13th century, Church stable 19th century, storage 2019
Collaboration for exhibition design: Archaeologist Göran Tagesson
Awards and recognitions: Nominated for Helgopriset 2023

Some buildings are fortunate enough to enjoy long and eventful lives. Over time, they may change functions, adapting to new needs while retaining their essence. When we developed Vreta Kloster, our aim was to create a vibrant and inviting destination — one that would open up Klosterhuset to all.

At the entrance to Berg’s locks outside Linköping lies Sweden’s first monastery, originally founded as a Benedictine convent. Today, only the ruins and Vreta Kloster Church remain. But there is also Klosterhuset — the former grain storehouse of the nuns. The site has long been a popular destination, drawing visitors for both religious and cultural experiences.

“For historic buildings like this, the key to longevity is meaningful use. When they serve a purpose, they stand a greater chance of being cared for and developed over time,” says Magnus Almung, lead architect at Tengbom.

Revealing Klosterhuset

Upon arrival, visitors are first greeted by the impressive church and its ruins — a natural focal point in the landscape. Behind the towering trees, Klosterhuset was once barely visible. There was no clear approach to the building, and when visitors finally found their way there, they were met with closed doors, unable to experience the beautiful vaulted interiors.

“The goal of the renovation was to enrich Vreta Kloster as a visitor destination with engaging exhibitions—sparking curiosity about the site’s architecture, archaeology, and history, all leading up to a well-earned café break,” Magnus explains.

Now, Klosterhuset is more visible. Carefully pruned trees allow glimpses of the building from the gravel square between the church and Klosterhuset. A winding path leads visitors between the trees and along the building’s long side, guiding them through a newly created opening in the old stone wall, directly opposite the church entrance. At the southern gable, a gravel courtyard connects to the historic stone walls.

We preserved history while making it accessible for the future

Photo: Åke E:son Lindman

Restored with care

Klosterhuset, dating back to the 13th century, was already in good condition. Some minor cracks in the masonry were repaired, and the roof — recently re-laid with traditional wooden shingles—was left untouched. To ensure year-round use, we carefully adapted the building, adding glazed doors within the existing openings.

The four wooden doors on the eastern side, remnants of Sigurd Curman’s early 20th-century restoration, were likely part of the original structure. “To improve the indoor climate, we added slim steel-framed glass doors behind the wooden ones,” Magnus explains.

The challenge was balancing functionality with preservation — enhancing comfort without compromising the historic wooden doors or the building’s unique, atmospheric light.

Thoughtful accessibility

Photo: Åke E:son Lindman

With ground levels already nearly flush with the thresholds, accessibility improvements required minimal intervention. To ensure inclusivity, a reversible modification allowed for step-free entry, and the automatic door mechanism was discreetly embedded in the floor. Meanwhile, the southern hall was designed as a flexible space, suitable for concerts, lectures, confirmation classes, exhibitions, and even a café. Additionally, a discreet wire system along the walls enables flexible lighting and display arrangements.

“With materials and patina this rich, our approach had to be careful—installing heating, lighting, and electrical systems in a way that respected the building’s integrity,” says Magnus.

Hidden technology, visible heritage

The large limestone slabs covering the floors had been loosely laid in sand, making it possible to lift them, conceal wiring beneath, and put them back without damage. In the northern hall, now home to the stone museum, the team carefully leveled the original flooring. In the southern hall, where the floor was more uneven, they added a new layer of limestone. The stone museum also received upgrades, including improved display cases, signage, and lighting.

“We wanted Klosterhuset to be open to visitors during the day,” Magnus adds. “But even when it’s closed, its beauty remains on display. Subtle lighting highlights the interiors, making them visible through the glass doors.”

A glimpse inside

We added an interior glass bay window to the stone museum, allowing visitors to peek inside even when the building is locked. The nearby red-painted stable now serves as a visitor facility with toilets, a preparation kitchen, and staff spaces. A simple serving hatch offers coffee straight into the monastery garden.

Photo: Åke E:son Lindman

The project also introduced a new storage facility for churchyard management near the southern visitor car park. Designed as a traditional agricultural building, it complements the surrounding 19th-century structures. A timber frame supports the structure, while horizontal laminated wood panels create the exterior. Carefully crafted details enhance the façade, corners, and eaves. Painted in Falu red, the building seamlessly blends into its historic setting.

As a result, Klosterhuset reopened to the public in spring 2019 — ready to continue its long and remarkable story.

 

Contact person

Magnus Almung

+46 31 708 38 01

Säby Gård

A historical monument steps into the future
Architecture
Building Preservation & Restoration, Culture
Client: Järfälla kommun
Location: Järfälla
Assignment years: 2011-2019
Awards and recognitions: Nominated for the Red Paint Award 2020
Photographer: Sten Jansin

Säby Gård is situated next to Säby lake in western Järvafältet’s nature reserve. The farm is listed, of great historical value and an important destination for visitors in Järfälla municipality. Today, the farm is used as a riding school among other things. For this project, we developed proposals both for a new stable block and a preservation and maintenance plan for the long-term management of the listed monument.

Säby Gård‘s manor house was erected in the 17th century from drawings by Nicodemus Tessin senior. The beautiful farm comprises of two wings from the 17th century as well as outbuildings and warehouses from the 19th century. The manor also features a baroque park with a pond and a tree-lined avenue. The facility houses horse riding stables, a pre-school, a home and a café.

Modern stables with a foot in the past

We planned the project and prepared work descriptions for the restoration of several key areas. The work included the old stables and the factor’s house. As antiquarian consultants, we also guided the replacement of pipes. In addition, we oversaw the restoration of the gallery and the stone portals of the manor house. To support the farm’s future management, we developed a preservation and maintenance plan. This plan covers the entire historical environment.

To preserve but also to develop

We planned the project and prepared work descriptions for the restoration of the old stables and the factor’s house. As antiquarian consultants, we also guided the replacement of pipes and oversaw the restoration of the gallery and stone portals of the manor house. To support future management of the farm, we developed a preservation and maintenance plan for the entire historical environment.

Preserving the historical building in the best way is a complex task. At the same time, developing it to meet today’s requirements and challenges requires both knowledge and experience.

Our project leaders and specialists in building preservation and antiquarian services worked closely throughout the project.

Contact person

Lina Swanberg

+46 8 412 53 36

Stjärnorp Castle Ruins

Where architecture meets restoration
Architecture, Cultural Heritage
Building Preservation & Restoration, Culture, Heritage Expertise, Renovation & Transformation
Client: Private
Years of construction: 2014–2022
General contractor: Miljöbyggarna Entreprenad i Linköping
Developer: Slottstornet AB
Building antiquarian and conservator: Tyréns Sverige AB
Photographer: Felix Gerlach

Stjärnorp Castle Ruins is not only an important cultural heritage site but also a beautiful example of how contemporary architecture can enhance and highlight historical buildings. Led by Erik Wikerstål from Tengbom as the chief architect, the project has been praised for its sensitive balance between preservation and renewal.

Since 1789, Stjärnorp Castle Ruins, located just north of Linköping, stood unprotected following a devastating fire. Through extensive restoration and modernization, it has been safeguarded against further decay and prepared for future generations. Today, the ruins play a significant role in the cultural and tourism landscape of Östergötland.

Award-winning craftsmanship

The restoration of Stjärnorp Castle Ruins has received widespread recognition, earning the Östergötland Architecture Prize in 2023. The jury commended it for “exploring the boundary between restoration and architecture and how we approach our cultural heritage.” Indeed, the restoration has been characterized by exceptional craftsmanship, with every detail executed with great care and respect for history.

Protective roof and elegant interiors

The ruins have been fitted with a discreetly integrated roof that shields the historic walls without impacting the exterior aesthetics. Inside, visitors are greeted by an elegant interior where modern materials such as wood, corten steel, and glass emphasize the original architectural features.

The large window openings now feature individually designed glass panels. Each panel is precisely tailored to fit the uneven shapes of the walls. The balance between history and modernity is both striking and subtle. This is evident in the newly added spiral staircase in the tower and the carefully crafted corten steel details.

“We aimed to create something that feels contemporary while rooted in the ruin’s history. The goal was for the old and the new to enhance one another, and I’m very pleased with the result,” explains Wikerstål.

Good architecture makes cultural heritage accessible

The restoration of Stjärnorp Castle Ruins shows how architecture can make cultural sites more accessible. Careful interventions have given the ruins a new function as a destination. More visitors are drawn to the area, while the project demonstrates sustainable restoration in practice.

“We hope that Stjärnorp Castle Ruins will become a place where people can meet and experience both the past and present in a unique way,” Wikerstål concludes. “By securing the ruins for the future, we ensure that coming generations can share in our collective cultural heritage.”

Awards and nominations

Stjärnorp has been shortlisted for the EUmies Award 2026 – Mies van der Rohe. The EUmies Awards were established in 1988 by the Fundació Mies van der Rohe and the European Union to recognise architecture that strengthens the interaction between culture, society, and creativity in Europe. The award celebrates projects that, in various ways, bring together the built, the human, and the natural, enhancing the quality of the environments in which we live. Stjärnorp Castle Ruin also received the Östergötland Architecture Award 2024.

Contact person

Erik Wikerstål

Architect
+46 42 19 48 56

Borås Congress

A transformed meeting house
Architecture, Interior Design
Building Preservation & Restoration, Culture
Client: City of Borås
Location: Borås
Assignment years: 2012-2019
Awards och recognitions: Nominated for the Borås City Urban Design Award 2022
Photographer: Åke E:son Lindman

It began with a simple sketch amidst fierce international competition, and the rest is history, and the future. Originally built in 1939 as Folkets Hus in Borås, the building was refined by Tengbom and reopened in 2018 as Borås Congress – a modern conference facility that preserves the values of its past.

Following a challenging prequalification process involving 60 architectural firms from around the world, Tengbom advanced to an invited design competition. The battle for Borås Congress had begun in earnest, and it was time to flex some muscles – or was it? Amidst advanced visualizations and meticulously packaged concepts, a simple hand sketch by Bo Karlberg stood out. In 2012, it became clear that the assignment was ours.

We were entrusted with the project because we understood both the architecture and the business.

“The proposal focused on developing a state-of-the-art conference facility for the entire region, restoring Gunnar Nilsson’s modernist entrance motif, and maintaining the building’s role as a community gathering place in Borås,” Bo explains.

Borås CongressBorås Congress

Accessible and flexible for all types of meetings

While the starting point for the project was preservation, the goal was to create a modern meeting place. Today, Borås Congress is one of the few Swedish buildings specifically designed for meetings, as opposed to many concert halls and arenas across the country.

The facility offers everything from intimate rooms for small gatherings to larger conference spaces for up to 1,000 guests. The building’s character is present throughout, as are its newfound flexibility and accessibility. The number of levels in the block was reduced from 36 to just 7 (!), and the floors were designed to allow for multiple events of different kinds to occur simultaneously.

Borås CongressBorås Congress

Borås Congress – a bridge between past and present

The new congress building spans an entire block across four volumes. Along Österlånggatan, Gunnar Nilsson’s bold entrance motif – carefully restored from layers of 1980s cladding – once again aligns with the iconic functionalist buildings of Borås.

Along Allégatan, the architecture adopts a more subdued and scaled-down character. In contrast, the new performance and hall volume, with its main entrance facing Robert Nilsson’s Place, makes a bold impression. Its shimmering facade of gold-anodized expanded metal stands out against a deep blue backdrop.

At the transition between old and new lies the glass wedge housing the congress foyer. Here, stucco lustro, an ancient Italian marbleizing technique, meets ultramodern pre-printed glass railings. The result is a meeting place that is both exciting and symbolic.

“It’s a powerful feeling to see visitors gathering and connecting here today,” Bo concludes. “That has always been the goal of the project for nearly a decade: the meeting of people.”

Contact person

Jerker Kryander

Practice Director
+46 73 524 90 28

Campus Vasastan

One building - many lives
Architecture
Building Preservation & Restoration, Education
Client: Hemsö Fastighets AB
Location: Vasastan, Stockholm
Assignment years: 2019-2022
BTA: 11 000 sqm
Photographer: Felix Gerlach

With the ROT Award-nominated Campus Vasastan on Karlbergsvägen 77 in Stockholm, we transformed a charcuterie factory facing possible demolition into a modern, vibrant campus with three upper-secondary schools in one building.

The building was constructed at some point between 1954 and 1971. It was a charcuterie factory first and later became an office. Today, it is a downtown upper-secondary school for 1,800 students and part of the solution to Stockholm County’s need for 15,000 new upper-secondary places by 2027. In 2019, a courageous Hemsö acquired Kadetten 29, which is now run by education company AcadeMedia.

Campus Vasastan
From a charcuterie factory to an office block – to three upper-secondary schools in one.

“There weren’t any tenants at first. With extensive experience under our belts, and expertise in upper-secondary schools, we worked with Hemsö to develop a detailed plan, a concept and an idea for an attractive school that they could show to potential tenants. Almost like working with branding,” says Karolina Lorentzi, a Tengbom architect with extensive experience in educational settings.

Stockholm’s future: reduced climate impact

Transforming a large building and giving it a new purpose requires significant effort from many players. Care for the environment is evident in the project through reuse, recycling, and high energy targets to contribute to a lower impact on the climate. But of course, the greatest environmental gain comes from the carbon dioxide emissions avoided by not tearing down a building. The on-site greenhouse is built with recycled materials, as is the carcass of the building.

“Reusing an existing structure while creating good settings isn’t just true sustainability. It’s also an efficient use of time – and an incredibly exciting project,” explains Karolina.

Many technical challenges

A reuse project on the scale of Campus Vasastan means facing one technical challenge after the next. The depth of the building presented a challenge for working with daylight, while a low ceiling in several areas required both extensive technical installations and space. Securing solutions for emergency exits and escape routes in a building with many people posed another technical challenge. Additional zones enabled us to make adaptations for accessibility.

Like an archeological dig

Demolition inside an older building that has undergone multiple updates is a bit like an archeological dig. Problems arise as you progress and innovative construction solutions must be found quickly.

Campus Vasastan
Campus Vasastan encompasses around 12,000 square meters on seven stories. Arranging the puzzle of logistics, flows, acoustics, light and structure is a complex process.

“For example, as we cleared off the framework, we found it was in really bad shape. A pillar was broken and construction had to stop. It was hanging, as if by a thread, and we had to call in an engineer. We didn’t have all the blueprints from earlier renovations, and so much of the steel was affected. Novogruppen did an incredible job as general contractors here,” explains Charles Davis, lead architect for the assignment.

Efficient flows and structure in every detail

What makes a school well-functioning? Well, among other things, it comes down to the handling and planning of larger spaces, acoustics, social areas, large-scale flows and logistics, accessibility, air, daylight, fire protection and safety. Campus Vasastan has an area of about 12,000 square meters on seven stories, both above ground and basement and semi-basement levels. It has 53 classrooms and three athletics rooms.

Campus Vasastan
A natural hub that serves many purposes. Presentations, events, studying, or simply a place to hang out.

What was once the garage entrance now serves as the main entry point and leads directly into the heart of campus — the welcoming atrium. From here, visitors get a clear view of all four lower levels, stretching from floor -1 up to floor 2. At street level, the atrium connects to the reception, café, library, student health center and open lounge areas. Meanwhile, the cafeteria, large kitchen, recycling and waste room, athletics center and changing room on floor -1 are also easily accessed from this central space

Campus Vasastan
Construction began in 2021 and the school welcomed its first students in fall 2022.

The upper floors contain light-filled classrooms designed for concentration, along with study spaces, administration offices, a teachers’ lounge, common areas, and flexible subject-specific classrooms. The team designed the open spaces to allow zoning and adaptable furnishings, creating rooms within rooms.

The third-story outdoor space, covering approximately 1,000 square meters, features a greenhouse. Students and staff can use this educational space as an extension of lab work, for gatherings, or simply as a lush green retreat.

How did we do it?

“Campus Vasastan was a success thanks to an open partnership with plenty of momentum from all players involved, with an open-minded approach and a clear common goal,” says Karolina. “Tengbom brought in expertise from an early stage and we were able to be on site throughout the project.”

Contact person

Mark Humphreys

Practice Director Stockholm
+46 8 412 53 43

Vendelsömalm School Building A

From the 1960s, now in new garb
Architecture, Cultural Heritage
Accessibility, Building Preservation & Restoration, Education, Renovation & Transformation
Client:
Location: Haninge Municipality
BTA: 8000 sqm
Assignment years: 2017-2021
Photographer: Felix Gerlach

In an understated concrete and wooden structure that is typical of its era, Vendelsömalm School opened in Haninge in 1966. With an aim to “preserve and reuse as much as possible,” the school has now been updated to meet contemporary needs and requirements. 

The original Vendelsömalm School consisted of a robust building with a few distinctive and sturdy materials, like untreated concrete and pine, brown linoleum and terrazzo. A minium red accent colour added contrast and recurred in the windows and wooden doors. Several renovations and technology installations were then carried out.

Vendelsömalm School
The 110-meter-long main hall and the stairway system link the building together.
Vendelsömalm School
The team made the main entrance and two schoolyard entrances accessible and replaced the entryways.

A return to the original quality

Vendelsömalm School has 600 students from preschool to ninth grade. In 2018, the school underwent an extensive and necessary renovation, replacing the ventilation and electricity. Tengbom was tasked with renovating and upgrading the main building and modernizing the accessibility and functionality of the floor plan.

“We wanted to retain the feel of the original, with cast concrete on three half-levels,” explains Tove. The 110-meter-long main hall, with its beautiful stairway, holds everything together. At the same time, we wanted to restore the former look of natural materials and recreate them in conversation with a contemporary style.

Greater security with a new floorplan

When we adapted the premises for their purpose, we moved the reception and principal’s office closer to the main entrance. The break room was also moved to improve student safety. The special education classroom, student health, library and teachers’ lounge were all placed centrally in the building.

“Vendelsömalm School isn’t a listed building. However, we brought in one of our restoration architects early on to document and analyze the building,” says Tove. “That study was the basis for several decisions.”

We let in more light

The team installed energy-efficient windows with transoms that resemble the originals, along with awnings and natural-coloured facade panels. They also made the main entrance and two schoolyard entrances accessible and replaced the entryways. Inside, they updated all installations and converted the cellar into a fan room. A new elevator now provides access down to the basement floor.

For more light, accessibility and safety, the new doors are glazed. The doors are all orange once again, like the original colour. A total renovation of the surfaces entailed new floors, a new false ceiling, acoustic solutions and fresh paint. There is now also a garbage room and a loading yard.

Vendelsömalm School
The tables and benches have an open design that neither cements roles nor determines who sits where.
Vendelsömalm School
The facades now have energy-efficient windows with transoms reminiscent of the original windows, awnings, and natural-coloured facade panels.

Renewal from historic walls

“The goal was to clean and restore the concrete in the main hall,” says Tove. “We decided to remove the old murals, which students painted with latex paint in the 90s. Unfortunately, it was hard to carry out such an extensive restoration of concrete. Instead, it was painted in concrete-like colours with the preserved rough texture of boards at the base. Old dents and the history on the walls can add a lot of beauty and invigoration.”

The false ceiling in the big main hall features untreated wood, restoring the room’s original concept. The walls in the combined assembly hall and cafeteria now have untreated wood panels, enhancing both aesthetics and acoustics.

Vendelsömalm School
A restful space.

Sound is subdued by the building – not the kids

In the open student areas, the team refreshed the original wooden furniture with modern, inviting seating and tables. They designed the adaptable module system for easy adjustments.

“The design of the tables and benches allows students to move freely without fixed roles or assigned seats,” says Tove. “The space adapts to different needs and situations. A school should be welcoming to all.”

Contact person

Mark Humphreys

Practice Director Stockholm
+46 8 412 53 43

Kalmar City Library

Kids get the best room in the new library
Architecture, Cultural Heritage
Accessibility, Building Preservation & Restoration, Culture, Education, Renovation & Transformation
Client:
Year: 2018-2020
Area: 3 100 sqm
Type: Preliminary study and interior design
Builder and partners: Klövern, Ulestedts snickeri & inredningar
Photography: Felix Gerlach

When Kalmar City Library moved into the city’s new cultural quarter, the focus was on children’s love of reading and joy of discovery. This three-story former post office is now a modern, accessible library.

Kalmar City Library
The city library in the old post office from 1947, designed by architect Lars-Erik Lallerstedt.
Kalmar City Library
To the right of the main entrance, the large window lets light into the children’s studio.

At Tengbom, we are passionate about preserving old buildings – and carefully upgrading them to meet the needs and conditions of today. We had the opportunity to create the interior design for the new city library and to transform the old post office and subsequent market hall into a vibrant space for readers of all ages.

From the balcony you can look out over the family section where the story tent enthrones itself in the middle of the room.

Kalmar City Library won Kalmar Municipality’s architecture and urban design award in 2021. From the jury’s statement:

“With a careful, sustainable renovation that qualitatively adds value, this project contributes to developing a good living environment for all residents of Kalmar and serves as a meeting space. The project visually communicates care for the overall whole and in the exterior and interior details, with a balance between form, function and sustainability in order to achieve excellent architecture.”

It started with a horseshoe

The head architect of Posten, L.E. Lallerstedt, designed the post office building in Kalmar in 1947. In the original space, the counter was built into a horseshoe-shaped depression in the floor. Today, this depression, as well as the floor and shapes, serve as a starting point rather than a challenge.

“We wanted to preserve the details, and at the same time we needed to give the space a new sense of flow,” says Hanna Philipsson, architect at Tengbom. “We had the horseshoe to work with, so we went from there and we also used an octagonal pattern from the original floor and the façade.”

Custom interior decor preserves and renews

The library has three stories, and the atmosphere becomes calmer the higher you go in the building. The beautiful entryway has been preserved in its entirety.

Kalmar City Library
Rooms for older children create space for individual reading but also function as a meeting place for smaller groups.
Kalmar City Library
Place-built forms for smaller children offer play and reading.

“We’ve created a lot of custom furniture,” says Hanna. “Interior architects don’t get to design furniture very often. Here, we’ve really gotten to think about it and head to the drafting table. We’ve worked to preserve older aspects while creating new functions.”

Unlike a classic library that naturally encourages silence, Kalmar City Library now invites play and socializing for all ages. Swings and slides add to the fun, while smaller seating areas offer families and kids a place to read, get cozy, and create their own little worlds. In the center of the room stands a light and transparent fairytale tent, inspired by the copper tent in Stockholm’s Haga Park.

Kalmar City Library
The story tent is the heart of the family section. The form interacts with Lars-Erik Lallerstedt’s design.

Open spaces and rooms within rooms

Kalmar City Library
New openings in walls create space and tie the interior together. The balcony offers a view down towards the fiction department.

Interior design ought to be felt and experienced. Naturally, the library also includes spaces for adults. Secluded areas with good lighting create perfect spots for reading and concentration – little rooms within rooms.

The horseshoe shape plays a role throughout the children’s area of the large hall. The room is lined with bookshelves in rounded shapes, with books on the outside and private seating arrangements on the inside.

The palette features blue and brown. The deep blue upholstery, bookshelves, and soft carpeting blend beautifully with the rich, dark-glazed wooden ceiling. In the center, a light brown checked floor adds warmth and harmony.

In addition to the interior design, Tengbom also carried out the feasibility study for the project. The library opened in 2021.

Kalmar city library is a q-marked building that will become part of the cultural quarter of the future.

Contact person

Joao Pereira

Practice Director Kalmar and Linköping
+46 708 79 99 38

Östermalm Market Hall and Hotel

Updated for the future
Östermalm Market Hall
Architecture, Cultural Heritage
Building Preservation & Restoration, Culture, Heritage Expertise, Hotels & Meetings, Renovation & Transformation, Restaurants, Retail
Client: Stockholms Stad
Location: Östermalm, Stockholm
Assignment years: 2021-2021
BTA: Market Hall 6770 sqm and Hotel 4800 sqm
Photographer: Åke E:son Lindman and Lasse Olsson
Collaborators: Ljusrum, Nyréns, AIX, Stockholms Målerikonservering, BK Beräkningskonsulter

With the renovation of Östermalm Market Hall, Tengbom has preserved a part of the city’s history while creating a new way to experience this historic culinary destination. The market hall has undergone the most comprehensive renovation in 130 years, and together with the new market hall hotel, this cultural legacy is ready to welcome visitors for yet another century to come.

Östermalm Market Hall
The large, curved windows and original entrances were renovated and accentuated with nighttime lighting. Photo: Lasse Olsson

After a little over a century in operation, Östermalm Market Hall was in great need of renovation. Decades of sporadic updates had resulted in a space that was no longer particularly inviting.

Our task: update, accentuate and improve

Restoring the market hall to its original luster involved significant challenges. We looked back in time to put the venue’s history to use, but the building also needed to meet modern requirements, and new additions should enhance the visitor experience.

Östermalm Market Hall
Restaurants along the building facades in combination with longer opening hours and outdoor seating areas contribute to a thriving outdoor setting. Photo: Åke E:son Lindman

We had to review the building’s technology and consider the complex logistics that take place in and around the hall. Adaptations for accessibility, replacing essentially all technology, and reinforcing the cultural-historic and antiquarian values of the building topped the agenda. Simply put: we wanted to elevate the user experience without corrupting any part of the building.

Respectful adaptation for the future

We have taken a comprehensive approach with great care for the character and details of the building, from technical functions and structural initiatives to restoring the original decoration. The original star-shaped floor plan has been restored to benefit retail and create clearer walkways. Additional features have been added to create new experiences, such as long balconies with seating for restaurant guests. Greater accessibility requirements contribute to a better experience for everyone, with elevators and additional toilets.

Östermalm Market Hall
The original colour scheme and decorative details have been restored. Photo: Åke E:son Lindman

New additions have a clear contemporary look that is quieter than the bold and colourful cultural-historic environment. In other cases, the choice was to emphasize and enhance the original appearance of the market hall. Paint conservators have carefully scraped away layer after layer of paint to reveal a picture of the building’s history.

Östermalm Market Hall
The original wood construction of the market hall has been renovated and adapted with low paneling and marble counters with integrated refrigerators and display areas. Photo: Åke E:son Lindman

Today, visitors encounter a more vibrant space, but in the same colours as before. Light also streams through the gable windows once more. The windows had been painted over at one point, but have now been replaced with new windows and an innovative jalousie system developed from boating technology to protect goods from direct sunlight.

Improved flows and new experiences

Today, visitors are met with a uniform and harmonious experience, a market hall that is now inclusive, adapted for accessibility and sustainable. Improved flows, smarter entryway solutions and a new waste and recycling system that reduces the number of truck transports to a fifth of what it was are just some of the elements that make Östermalm Market Hall an ultramodern meeting place. Restaurants along the building’s facades combined with longer opening hours contribute to a bustling environment outside, with greater focus on contemporary needs and behaviors, such as socializing and being seen.

The hotel – a new way to experience this historic culinary destination

A new hotel has opened that is connected to the market hall. Through parametric design and innovative architecture, Tengbom has helped create an extraordinary hotel experience. An old industrial candy factory from 1910 and an Art Nouveau residential building from 1888 have been transformed into a chic hotel. It was a tricky task to chisel a hotel out of buildings in different styles and from different eras. The historic character of the buildings had to be respected, and at the same time, we needed to unite the structures and redesign the floor plan for compatibility as a hotel. To achieve functional flows on each floor, a modern addition in handmade brick was added to the existing buildings. Together, the buildings circle a courtyard.

Östermalm Market Hall
Together, the modern addition and the original buildings circle a courtyard and create a new meeting place in the city. Photo: Åke E:son Lindman

With the market hall hotel, a new sense of flow and energy have been established on the block.

The addition in handmade brick, perforated with sound absorption underneath to create a comfortable sound environment in the hotel courtyard. Photo: Åke E:son Lindman

A glass roof in collaboration with tech and the sky

We designed the courtyard as a year-round meeting place to ensure both function and enjoyment. To achieve this, we covered the space with a specially designed glass roof. The elegant, undulating shape makes the roof feel like an extension of the sky rather than a glass cover. Placing a glass roof over three buildings with eaves at different heights posed a unique challenge. We also aimed to retain the feeling of being outdoors while preserving the neighbors’ view and daylight. To solve this, we used parametric design—an algorithmic approach that streamlines the construction of complex shapes. This method allowed us to maximize the glass surface, minimize structural elements, and create a slender roof with an open feel.

With minimal structural elements, the undulating glass roof elegantly arches across the three different buildings with eaves at dissimilar heights. Photo: Åke E:son Lindman

Sound – a crucial component

In a large, glassed-in courtyard, acoustics can pose an obstacle to a pleasant experience and the sense of being outdoors. To reduce echoes and excess noise, we chose to cover the addition with a perforated brick facade. By leaving out every other brick and adding sound absorption underneath, we succeeded in creating effective sound reduction. The abstract brick pattern gives the facade a compelling depth while serving an important function. To further ensure noise reduction and a pleasant sound environment, we chose acoustic plaster as a complement when re-plastering the old residential building.

a chic hotel. The passage between the hotel and the market hall now creates a new city flow through the block. Photo: Åke E:son Lindman

The result – a new city flow

The passage features site-cast concrete and terrazzo stairs. This creates a subtle yet contrasting transition between the market hall and the hotel. Photo: Lasse Olsson

We retained and restored an existing passage that leads from the street to the hotel’s courtyard. We also created a new passage to connect the courtyard to the market hall. Together, these changes have introduced a new city flow through the block.

“Now passersby can take a shortcut from Nybrogatan via the hotel and market hall to Humlegårdsgatan – which also benefits commercial activity in both buildings.” The new passage that cuts through the old brick and concrete construction required powerful support frames. We chose to expose these changes in painted black steel and site-cast concrete, while creating an understated, contrasting transition to the colourful, detailed environment of the market hall and hotel.

The new passage now connects the market hall to the hotel. Inside, Leontine Arvidsson’s artwork “Bäst före: torsdagen den 12 mars 2020” (“Best by: Thursday, March 12, 2020”) adds a striking visual element. Photo: Åke E:son Lindman.

Taken together, we’ve created an experience that feels like traveling back in time, while the market hall is relevant for the future once again. Time will tell if we’ve hit the right note, as we did with the temporary market hall. But for now the city, country and world have regained a piece of cultural heritage – and then some.

Footnote: The hotel operator and architect Per Öberg developed the design concept for the hotel.

Awards and Recognitions

In 2021, Östermalm Market Hall won the Swedish Lighting Prize (Interior Category) and Stockholm Building of the Year.

Contact person

Mark Humphreys

Lead Architect
+46 8 412 53 43

Trikåfabriken

A sustainable intersection of old and new
Architecture, Urban Development
Building Preservation & Restoration, Idea & Vision, Offices
Client: Fabege
Location: Stockholm
Assignment years: 2014-2019
Builder: Fabege
Partners: Tyréns, Brandskyddsalget, Bengt Dahlgren, PRN Elkonsult
Environmental certifications: BREEAM SE Very Good

The Trikåfabriken building in Hammarby Sjöstad exemplifies how contemporary architecture can connect the past with the present while adding a new layer to the city’s history. In 2015, Tengbom won the architectural competition announced by Fabegé, and today, a completed hybrid building demonstrates how architects will need to work in the future.

Trikåfabriken
Trikåfabriken is located in Hammarby Sjöstad, in southern Stockholm. Photo: Felix Gerlach

A changing neighborhood

Trikåfabriken is a 25,000-square-meter office building located in the former industrial district of Hammarby Sjöstad, an area undergoing significant transformation. The building and its neighboring properties retain a distinct industrial character, which has been carefully preserved and highlighted in its redevelopment. The original brick structure from 1929 has been expanded with a five-story wooden extension. The project also included a complete interior renovation of the entire block. After demolition, only the structural frame of the original building remained.

Trikåfabriken
The team merged the previous separate entrances into one main entrance. The atrium now serves as the central hub for all tenants and welcomes the general public to the heart of the complex. Photo: Felix Gerlach

Central atrium

Entrances via bridges enhance flexibility. Photo: Felix Gerlach

The design centers the building’s internal communication around a main staircase with elevators in the new atrium. To maximize flexibility, the team added bridges to each floor. These bridges provide views over the newly designed, plaza-like space.

All entries are accessed via these bridges, creating a dynamic setup for tenants who prefer shorter leases or need flexibility in their spaces. Co-working areas also act as adaptable zones, accommodating varying needs and functions between tenants.

Tengbom has provided tenant adaptations and interior design for the Swedish Environmental Protection Agency, Hyper Island, and the ground-floor café, Yume.

Wood is wonderful

Wood is a prominent material in Trikåfabriken, offering both a tactile and educational experience. It reflects an honest design philosophy where nothing is hidden or artificial. The ambition is to make the connection between old and new as clear as possible, which is why the wooden framework is exposed internally and visible from the exterior, showcasing both columns and floor slabs.

Trikåfabriken
Trikåfabriken’s wooden frame generates 50% less CO2 than steel or concrete would, and also helps balance indoor humidity levels. Photo: Robin Hayes
Trikåfabriken
Photo: Robin Hayes

Wood is sustainable

Wood is a material that most people can relate to, and many find it pleasant to interact with. Beyond giving Trikåfabriken a strong identity and character, it is, of course, an environmentally smart choice and a contributing factor to its BREEAM Very Good certification. A wooden framework binds carbon and is lighter than both steel and concrete, enabling a lighter extension that required less structural reinforcement.

Contemporary design in Trikåfabriken

The façade of the extension features corten steel, a material with a strong character. It complements the original brickwork without mimicking it. To highlight the connection between old and new, the design includes a visual break. An entire floor made of glass creates this separation.

Trikåfabriken
The Corten steel roof and façade consists largely of recycled material and is maintenance-free throughout its lifespan. Photo: Felix Gerlach

Contact person

Mark Humphreys

Practice Director Stockholm
+46 8 412 53 43

Swedish National Museum of Art

Eye-opening architecture - National Museum
Architecture, Cultural Heritage
Accessibility, Building Preservation & Restoration, Culture, Heritage Expertise, Renovation & Transformation
Client: National Property Board
Years of commission: 2013-2018
Architects: Wingårdhs with Tengbom as subcontractor
Awards and recognitions: Årets Betongarkitekter, Stenpriset, nominated for Kasper Salin

Through Erik Wikerstål, formerly Wikerstål Architects, Tengbom, as a sub-consultant to Wingårdhs, has carried out restoration, renovation, and updating of the Swedish National Museum of Art. On October 13, 2018, the doors were reopened to the public, and it is in every way a lighter museum that is met by the visitors.

It took five years with much respect, finesse, and expertise to dismantle the Swedish National Museum of Art and then reassemble it in an updated, modern, and accessible version. For 150 years, the museum has been rebuilt time and time again based on various prevailing ideals. They have built windows, lowered ceilings, and changed the floor plan. Now, on behalf of the National Property Board of Sweden, Tengbom, in collaboration with Wingårdhs, metaphorically opened the museum’s eyes, let in the light and re-established contact with the city and world outside.

Above all, the work has entailed a major technical renovation focusing on personal safety, fire safety, climate, and accessibility. The result is a museum that is better for the visitor, better for the art, and better for the staff who work there.

All the light in the courtyards 

The team raised the courtyard floor to accommodate new ventilation equipment placed in Blasieholmensberg. They then lowered the church hall floor to its original level, creating an accessible entrance on the same plane. To improve accessibility, they also converted eight windows around the courtyards into doorways.

The southern courtyard has received an expressive addition in the form of a lift tower. It is designed to be a large sound-absorbing box with the function of an altar cabinet where the screens and technology for seminars are hidden behind two large doors.

Swedish National Museum of Art
Erik Wikerstål in front of the elevator tower.

“The only new form we have introduced is essentially a wickerwork structure on the lift tower,” Erik says. “We also added a small concrete service building at the back of the museum.”

Swedish National Museum of Art
The concrete servicebuilding.

Both courtyards now open up to the museum’s interior and the sky. New glass roof domes let in daylight and improve the acoustics. Sound travels up into the ceiling, where small glass pyramids on the walls help distribute it. Stained acoustic plaster absorbs the sound, preventing it from bouncing back.

In 2013, Wingårdhs and Wikerstål Architects won the contract for the National Museum on behalf of the National Property Board of Sweden. Wikerstål Architects became part of Tengbom in 2017. The project has already received several award nominations, including Stenpriset 2018, Betongpriset (extension), and Construction of the Year.

Contact person

Josefin Larsson

Business Dreveloper
+46 72 183 02 34