 One US Bank Plaza, the local headquarters for US Bancorp, was constructed for the Mercantile Bancorporation in the Structural expressionist style, emphasizing the steel structure of the building.During the 1990s, St. Louis saw the construction of the largest United States courthouse by area, the Thomas F. Eagleton United States Courthouse (completed in 2000).The Eagleton Courthouse is home to the United States District Court for the Eastern District of Missouri and the United States Court of Appeals for the Eighth Circuit.