A design of the Spanish architect Santiago Calatrava won a closed urban design competition for the new long-distance and S-Bahn station in 1993. Calatrava imagined that the platforms would be flanked by office buildings—as later implemented for the new Berlin Hauptbahnhof. This was difficult to finance and caused a long controversy over the plan. Finally, the third-ranked design of the German architectural bureau of Gerkan, Marg and Partners was developed between 1996 and 1998 after a review of the original design, which had a roof that was open on both sides. Objections of the passenger associations during the planning approval process achieved a better design for access to the S-Bahn platform.