Buildings, Office & Residential

Extension for World Trade Organization (WTO)

The extension building of the historic World Trade Organization (WTO) headquarters is located on the shores of Lac Léman in Geneva. The 9-storey administration building for the World Trade Organization accommodates offices, a library, a restaurant, printing and technical facilities and an underground car park. The crystalline building is split in two areas: offices on the upper floors and infrastructure on the lower floors. The library is located on the mezzanine floor that is characterized by a set-back plinth thus creating a floating caracter. Given the short distance to the main building and for environmental reasons, the building was designed with a double-shell diaphragm wall. The ground floors in split-level system allow an efficient traffic routing on the parking floors.

Geneva, Switzerland
Wittfoht Planung GmbH, Stuttgart
OMPI – Organisation Mondiale de la Propriété Intellectuelle
Sven Plieninger

Technical Data

14,500 m²
Building height of base construction
approx. 13 m
Building height of office wing
approx. 22 m
Dimensions of base construction
89 x 33 m, 3 ground floors
Dimensions of office wing
74 x 16 m, 5 upper floors
56,800 m³


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