The project involved 200 first-year students, who prefabricated all the built elements of the installation in Lausanne and transported them across Switzerland in six shipping containers to Zurich, where they unloaded and re-assembled them as a full-size ephemeral structure. Devoted to social and cultural events, the public installation is not a homogenous architecture, but rather, the result of various different contributions. Each offers an approach to spatial appropriation by many voices, in a dialogical process that questions the quality of public life in view of growing cities around the globe.