Seattle Municipal Tower is a 62-story, 220.07 m skyscraper at 700 5th Avenue at the corner of 5th Avenue and Columbia Street in downtown Seattle, Washington. It is the fourth tallest building in Seattle. At its completion in 1990, the building was named AT&T Gateway Tower and later changed to KeyBank Tower reflecting the names of former anchor tenants AT&T and KeyBank. The City of Seattle purchased Key Tower in early 1996 to house utilities and general government functions.