Whitacre Tower, also known as One AT&T Plaza, and formerly known as One Bell Plaza and One SBC Plaza, is a 37-story high-rise in Downtown Dallas, located adjacent to the Akard Street Mall.
It serves as headquarters for AT&T and for Southwestern Bell Telephone, who operates as "AT&T Southwest". The building is 580 feet (177 m) tall and was constructed in 1984. Currently, it is the 13th-tallest building in the city. The white stone and glass skyscraper has over 1,000,000 square feet (93,000 m2) of office space.