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Projects: Corporate, Residential

Urban tectonics

Vulcano, Zürich-Altstetten
Three elegant, dark high-rise towers rise from the continuous structure of the lower floors: the Vulcano residential and commercial building is an urban landmark in a centre of the highest density: the Zurich-Altstetten development area.The design of the exterior space responds to the high intensity of use with a differentiation and layering that condenses on the street side, decelerates in the quieter rear spaces and creates privacy at airy heights.

The representative promenade in front of the building directs passers-by and visitors. A row of bubble trees in large-format planters creates zones for movement and stay and marks the transition from the building’s front zone and the public street space.

The trees integrate the site into the city’s overarching avenue concept and yet subtly stand out from the urban concept. They counter the powerful verticality of the buildings with the broad, horizontal canopies of their crowns. On the roof of the connecting block, residents have access to roof gardens as a communal retreat with a view of the city panorama and the park.

The park at the back of the building is a counterpoint to the linear dynamics of the front promenade. It decelerates the dense, fast-paced life of the surroundings. As if the buildings had pushed the ground together, the asphalt that flows around the entire building begins to bulge. The plane lifts into the third dimension. Where the elevations grow into hills towards the centre, the hard surface merges into green spaces. Shrubs and trees elevate the shifting topography. In interaction with the terrain modelling, they become mediators between the high-rise towers and the ground level. Above all, however, they create spaces of retreat in the small green area.

The plants species of the dry floodplains, which were native in this area in the past, are ideally adapted to the demanding urban climate. They imprint their character on the place. Dark pine canopies tower over silver-grey areas of buckthorn and oil willow, black locust trees stand above lush carpets of grasses and flowers. Surface becomes space; the horizon becomes a wavy line; the asphalt plain transforms into an abstract, green hilly landscape – and thus becomes an independent integral part of the surrounding urban outdoor space system.

Project information
Client: Credit Suisse/Steiner AG
Study commission 2013, recommendation for further development
Planning: 2013-2017
Realization: 2015-2018
Landscape architecture: Fontana, Basel
Architecture: Dominique Perrault Architecture, Paris