After more than 11 years of vacancy, the former IBM main building in the Rieker Business Park seemed unsuitable for repurposing. The monofunctional and static black cube building has been strengthened and modernized with a number of strategic interventions in use-value, experience, and identity. The new concept office building is designed according to the idea of a city: with streets, squares, facilities, and catering. As in any city, there are various functions in place to stimulate organic growth and development. People can use them to work, play sports, organize and attend events and for a special lunch or dinner at the restaurant Bureau on the roof terrace of the building.