KCAP and K+H, in collaboration with Transsolar KlimaEngineering, PML Lange and WTM Engineers have won the first prize in the competition for a sustainable residential tower in Hamburg, Germany. The project is one of three ‘Wasserhäuser’ that are to be built in the Baakenhafen, which is part of the HafenCity master plan by KCAP/ASTOC - currently the largest inner-city development in Europe. One of the main objectives was to design a tower that is part of its context but also has a clear identity of its own, and makes maximum use of its location.