Study on urban production using the example of the “Urban Quarter Hauptgüterbahnhof in der Bahnstadt” in Braunschweig STADTart and Multiplicities are supporting the city of Braunschweig as part of the conversion of the former main station into an urban quarter based on a mixed-use concept. The results of the study are intended to strengthen the business location, particularly with regard to underpinning the existing large companies, as well as contributing to the sustainable and resource-conserving urban development of Braunschweig in accordance with the „Leipzig Charta“ and to the attractiveness of the residential location.