In 2002 this city landmark at Hamburg's Deichtor has been built, directly at the southern entrance to the city centre. The ten-storey office building Deichtor mediates between the business district, the Speicherstadt and the future Hafencity, as a hinge, connecting the dynamic of the streets and the rail road with the expanse and the calm of the water. Central to the building are alternatively mirrored z-shaped office floors, which generate three-to-four storey voids. Four winter gardens and two four-storey lobbies generate lively, green 'windows', which are not only perceived as attractive eye-catchers by night and day, but which also create a comfortable atmosphere within, for the users of the building. For acoustic and climatic reasons, the building is contained within a glass skin. The offices are located at the outer double façade, or to the winter gardens.