High Quality Content by WIKIPEDIA articles! Ameritech Center or AT T Ohio is a commercial high-rise building in Cleveland, Ohio. The building rises 253 feet (77 m) in Downtown Cleveland as a part of the Erieview Plaza complex. It contains 16 floors, and was completed in 1983. AT T Center currently stands as the 29th-tallest building in the city, tied in rank with the Penton Media Building and the Ohio Savings Plaza. The architectural firm who designed the building was Madison Madison International. AT T Center contains offices of the Dallas-based AT T Corporation.