Enlarge image Photo: Courtesy of Archimedes.      USTRA OFFICE BUILDING Hannover, Germany 1995– The nine-story, brushed stainless-steel office tower designed for USTRA, the Hannover public transportation authority, visually responds to its site down the street from the Am Steintor park, which is surrounded by historic buildings. Gehry's sleek, twisting structure rotates in the park's direction to acknowledge the open space and the older architecture, which it reinterprets with a contemporary visual vocabulary. Minimal exterior details prevent the tower from overpowering the neighboring buildings, and its rectilinear foundation echoes their boxy forms. An adjacent five-story component—to be clad in dark blue stainless steel—will mediate the height change between the taller structure and its low-lying neighbors. Angled windows are recessed on the facade, facilitating a view of the nearby landscape while also emphasizing the exterior's uninterrupted sculptural form.