Tower City Center (formerly known as Cleveland Union Terminal) is a large mixed-use facility located on Public Square in downtownCleveland, Ohio. The facility is composed of a number of interconnected office buildings, including the landmark Terminal Tower, a shopping mall, a casino, two hotels, and the main hub of Cleveland's four rapid transit lines. On March 17, 1976, the tower was added to the National Register of Historic Places as the Union Terminal Group.