Characteristic of this high-rise of the DZ BANK is its projecting upper termination, which gives the impression of a crown. This corona consists of 11 spokes and extends 11 metres out from the building. In order to prevent ice from forming on it, which could cause it to collapse, the “crown” is heated in winter. Of particular interest is the 900-square-metre winter garden in the centre of the building, which is open to the public. The building also contains a shopping area and restaurant facilities.An eye-catcher in front of the building is the 12-metre high sculpture “Inverted Collar and Tie”. This upside-down tie, rising into the air, was created by Claes Oldenburg and Coosje van Bruggen, and is an ironic reference to the attire worn by pedestrians on their way into the office. DZ Bank AG is the second largest bank in Germany by asset size and the central institution for more than 1,000 co-operative banks and their 12,000 branch offices. Within the Volksbanken Raiffeisenbanken Co-operative financial network, which is one of Germany's largest private sector financial service organisations, DZ Bank functions both as a central institution and as a corporate and investment bank.
DZ Bank is an acronym for Deutsche Zentral-Genossenschaftsbank (literally "German Central Co-operative Bank").