The design, submitted by David Chipperfield Architects Berlin, was selected from 12 entries in a two-stage architectural competition. Situated in central Hamburg, between the Outer Alster Lake and Dammtor Station, the new office complex will be partially constructed using materials recovered from the existing buildings on site. It will provide a new headquarters for the Signal Iduna Group, one of Germany’s largest insurance companies, as well as lettable office space and a public ground-floor. The complex integrates into the heterogeneous environment with several free-standing buildings of different dimensions forming a permeable end to the urban block. Customised structural frameworks will be designed and used for the buildings in response to their different spans, including solid-timber, timber-hybrid and reinforced-concrete structures. This approach will create maximum flexibility for the intended use as well as for any potential future uses.