About U.S. Bank Plaza. Completed in 1981, U.S. Bank Plaza (formerly Pillsbury Center) is a 1.3 million-square-foot office complex. Its dual office towers contain 22 and 40 stories, and are clad in travertine marble and bronze-tinted reflective glass. Serving as an entrance to the complex is a large, eight-story glass-enclosed atrium with a roof composed of six sloping glass prisms.