77 West Wacker Drive

77 West Wacker Drive, previously the United Building, is an office building in the Chicago Loop. It was finished in 1992. The building rises to a height of 668 ft (204 m) with around 944,000 square feet (87,700 m2) of interior space. The building, with 51 floors, was designed by Ricardo Bofill. It was formerly known as the RR Donnelley Building. In 2007, the building became the corporate headquarters of United Airlines. References Other websites Media related to 77 West Wacker Drive at Wikimedia Commons 77 West Wacker Drive Archived 2019-07-02 at the Wayback Machine Emporis listing Prime Group Realty Trust 77 West Wacker Drive Archived 2010-02-02 at the Wayback Machine - Ricardo Bofill Architecture