The Commerzbank building, situated in the middle of the city centre, promises to be an exceptional complex not only architecturally, but also in terms of energy consumption. The plan of the building, which, including the aerial, is almost 300 m high, is triangular in form with slightly concave sides. Within the transparent tower gardens totalling 3300 sqm are set aside in a spiral configuration, stepping up throughout the building as 14 m high climate buffers. The office floors are combined to create so-called villages; in conjunction with the gardens a central atrium, which is ca. 160 m high, brings daylight even to the offices in the centre. The balance of energy use achieved through most advanced operating systems will be much more environment-friendly than in other high-rise buildings. It can already be stated today that a landmark of contemporary architecture is in the making here, comparable in its historical significance only with the works of a Frank Lloyd Wright, Le Corbusier or Ludwig Mies van der Rohe.