It is fascinating that a piece of the city that has been forgotten for years can be upgraded again. The place became vacant because a planned office development was cancelled with many existing office spaces vacant as result. ZUS wanted to redevelop the public space and solve the vacancy of office spaces. Mainly because the revival of the city is not helped by the traditional top-down urban model. But through a bottom-up model in which citizens participate. ZUS introduced a new way of making a city by developing new instrument for design, financing and planning. It is the world’s first piece of public infrastructure to be accomplished mostly through crowdfunding. The luchtsingel has become a prototype for sustainable development.