|One US Bank Plaza|
|Location||505 North 7th Street
St. Louis, Missouri
|Antenna spire||180.4 m (592 ft)|
|Roof||147.5 m (484 ft)|
|Design and construction|
|Architect||Thompson, Ventulett, Stainback & Associates|
One US Bank Plaza (formerly One Mercantile Center) is a 36-story building in Downtown St. Louis, Missouri. The 147.5 m (484 ft) building is topped by an antenna that raises the total building to 589 feet (180 m). In the 1990s the Ambassador Building next to it was razed and became part of the building's plaza.