Frankfurt's fire brigade trains here for emergency situations. The steel crown on top of the building weighs 95 metric tons and is heated in winter to avoid icing. A sculpture of a giant tie by Claes Oldenburg and Coosje van Bruggen is set up in front of the entrance. This building is located next to the City-Haus and belongs to the same bank. Several buildings have imitated this tower's crown, including The Palisades West in Vancouver.