The entire administrative headquaters of Berliner Volksbank building is intended for office use and was completed in 1997. It was the first building completed within the urban plan around Potsdamer Platz; Berliner Volksbank moved here in 1998.

Isozaki used a geometric language and it consists of two massive long parallel wings about 150 meters, containing 1,200 offices for a total of 28,000 square meters. The two wings, 17 mt away from each other, are developed following the trapezoidal pattern of the batch; "slipping" of the two major sides creates two heads in an inclined front which aligns the facades. The facades of the ground floor are fully glazed and set back from the line of the road. Above this core "fragile" projecting the remaining six floors, treated as a completely flat continuous wall. The effect is that visual aesthetic of the facades "public" is determined by an alternating composition of three trapezoidal modules, staggered as you climb. The modules are made from stained glass window openings and the combination of the coating elements consist of dark pink-colored tiles and coffee.

Isozaki is clearly different from neighboring buildings built in the same years. The design has strong evocative elements. The outer upper floor of the facades, set back from the road curtain, is glazed and resumes, but vertically, the same wavy pattern of the garden decking; what symbolically alludes to the flow of the water, from near Landwehr Canal, it penetrates into the new building complex, then also spread to other locations in indoor and urban complex conceived by Renzo Piano