The Williams Tower is a 64-story, 1.4-million-square-foot Class A office tower located in the Uptown District of Houston, Texas.At 64 stories, and 909 feet above the ground level, the Williams Tower is the tallest building in Houston outside of Downtown Houston. When it was constructed in 1983, it was also the world's tallest skyscraper outside of a city's central business district.The building was built to function as two separate towers stacked directly on top of one another, one comprising the first forty floors, and the other the forty-first to sixty-fourth. The building has separate banks of elevators and lobbies for each of the two building sections. A majority of the bottom 40 floors are occupied by Williams. The remainder of the building is occupied by a variety of tenants.