The Warren G. Magnuson Health Sciences Building is part of the University of Washington in Seattle, Washington and the world's largest single university building with a total floor area of 533,000 square metres (5,740,000 sq ft). Although the building is made up of over 20 wings built over more than 50 years, the interior hallways are fully connected. The Magnuson Health Sciences Building is also referred to as the Health Sciences Center or Health Sciences Complex, but should not be confused with the Warren G. Magnuson Clinical Center at the National Institutes of Health in Bethesda, Maryland which is also named for United States Senator Warren Magnuson.