A Rooftop Forest for Stuttgart
The Calwer Passage in the centre of Stuttgart has been extensively renovated and redesigned. The redevelopment involved replacing the upper floors of the 1970s building with a new, up to seven-storey structure with extensive landscaping. The listed glass vault has been retained and the basement floors have been integrated into the city centre S-Bahn station. The building now provides office, residential and retail space.
The extensive landscaping is an outstanding feature of the project. It features 2,000 planters with a total length of 1,700 metres, 82 large trees on and around the building and a small mixed forest on the roof of the seventh floor. A hilly landscape with shrubs, terraces and herb meadows on the lower level completes the green concept.
This green transformation has many benefits for residents and the environment. It creates a healthy urban climate, reduces noise and heat, lowers the concentration of particulate matter and mitigates the urban heat island effect. The diverse planting creates a year-round visual attraction that makes the project special.
The project continues the original vision of urban regeneration and makes an important contribution to improving the local microclimate. It is an example of how modern architecture and sustainability can be successfully combined.
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