David Willen documents a 1950s Citröen Garage conversion in Zurich

In the 1950s, the age of the automobile, car workshops and showrooms the size of shopping malls became a frequent sight on urban peripheries. The concrete, steel and glass Schlotterbeck Citröen Garage in Zurich, designed in 1951 by Basel architects Suter & Suter, is a perfect example. But needs change and cities evolve. Now, 65 years later, the site is part of the dense city structure and space is at a premium here. The listed building, with its double helix access ramps, has escaped demolition but is being transformed into a hybrid commercial and residential project by giuliani.hönger architects.
During the conversion phase, the changes taking place within the structure of the building are being documented by the Swiss photographer David Willen. Permanence, ruin, renovation, conservation and preservation have also shifted a lot in our understanding over time. Willen’s images preserve for us these transient scenes and spaces that we have learned to value.
The top loft area and its brightly-coloured electrical installations inspired Willen
Through his eyes we see a building undergoing change as a work of art, the incisions and demolitions like so many Gordon Matta-Clark cuts; found remnants shot by Willen with near pious care; or a roomful of wooden supports that are reminiscent of David Chipperfield’s 2014 art installation of 144 tree trunks in the Neue Nationalgalerie in Berlin.
This project connects the deeper dimension of time to three-dimensional space and compresses it back to us in two-dimensions in the form of images. Willen understands the aesthetic kick we get out of the intersections of great effort and entropy; the inevitable mortality of things and the nascence of the new. Through this ongoing project we get to see not just the rebirth of a building, but the birth of an artwork as well.
Schlotterbeck under construction, as seen from the nearby park in a densely built part of Zurich
The building’s second floor tower, with its double-helix ramp, now opens on an existing dock wall
On the same floor, giuliani.hönger worked with the listed building’s existing ramp and created its tower volume
The former concrete, steel and glass structure’s double helix is a key architectural feature in both the old and new life of the Schotterbeck Garage
The building offers expansive city views from its roof. Pictured: vistas from the middle section towards the tower
The former factory structure’s third level includes residential units, seen here during the building process
Stud walls on the second floor, before being covered and plastered
Some of the new apartments are duplex maissonettes, so openings were needed to place staircases to connect the floors
Similarly, pictured here is the recess for a duplex unit’s staircase, part of the former first floor workshop and now a residential space
The building’s floorplates were cut open in various places, in order for new staircases to be fitted
Colourful formwork panels were used to shape the tower’s cylindrical concrete form
The basement workshop, pictured here with a revealed existing wall that is part of the foundation
INFORMATION
For more information, visit the Project Schlotterbeck website
Photography: David Willen
Wallpaper* Newsletter
Receive our daily digest of inspiration, escapism and design stories from around the world direct to your inbox.
-
Wild sauna, anyone? The ultimate guide to exploring deep heat in the UK outdoors
‘Wild Sauna’, a new book exploring the finest outdoor establishments for the ultimate deep-heat experience in the UK, has hit the shelves; we find out more about the growing trend
-
Highlights from the transporting Cruise 2026 shows
The Cruise 2026 season began yesterday with a Chanel show at Lake Como, heralding the start of a series of jet-setting, destination runway shows from fashion’s biggest houses
-
Behind the design of national pavilions in Venice: three studios to know
Designing the British, Swiss and Mexican national pavilions at the Venice Architecture Biennale 2025 are three outstanding studios to know before you go
-
Meet Lisbeth Sachs, the lesser known Swiss modernist architect
Pioneering Lisbeth Sachs is the Swiss architect behind the inspiration for creative collective Annexe’s reimagining of the Swiss pavilion for the Venice Architecture Biennale 2025
-
A contemporary Swiss chalet combines tradition and modernity, all with a breathtaking view
A modern take on the classic chalet in Switzerland, designed by Montalba Architects, mixes local craft with classic midcentury pieces in a refined design inside and out
-
Herzog & de Meuron’s Children’s Hospital in Zurich is a ‘miniature city’
Herzog & de Meuron’s Children’s Hospital in Zurich aims to offer a case study in forward-thinking, contemporary architecture for healthcare
-
Step inside La Tulipe, a flower-shaped brutalist beauty by Jack Vicajee Bertoli in Geneva
Sprouting from the ground, nicknamed La Tulipe, the Fondation Pour Recherches Médicales building by Jack Vicajee Bertoli is undergoing a two-phase renovation, under the guidance of Geneva architects Meier + Associé
-
Remembering Alexandros Tombazis (1939-2024), and the Metabolist architecture of this 1970s eco-pioneer
Back in September 2010 (W*138), we explored the legacy and history of Greek architect Alexandros Tombazis, who this month celebrates his 80th birthday.
-
All hail the power of concrete architecture
‘Concrete Architecture’ surveys more than a century’s worth of the world’s most influential buildings using the material, from brutalist memorials to sculptural apartment blocks
-
Three Object Apartment embraces raw concrete honesty in the heart of Athens
Three Object Apartment by DeMachinas is a raw concrete home in Athens, which confidently celebrates its modernist bones
-
Giovanni Michelucci’s dramatic concrete church in the Italian Dolomites
Giovanni Michelucci’s concrete Church of Santa Maria Immacolata in the Italian Dolomites is a reverently uplifting memorial to the victims of a local disaster