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  of interior space."Prime Group Realty Trust Extends Major Tenant Lease At 77 West Wacker Drive." Business Wire. March 10, 2004. Retrieved on November 11, 2009. The building, with 51 floors, was designed by Ricardo Bofill."Prime Group Realty Trust Announces Two Lease Transactions at 77 West Wacker Drive." Business Wire. October 19, 2006. Retrieved on November 12, 2009. It was formerly known as the RR Donnelley Building. In 2007, the building became the corporate headquarters of United Airlines.

References

Other websites

77 West Wacker Drive 
Emporis listing
Prime Group Realty Trust
77 West Wacker Drive  - Ricardo Bofill Architecture

Category:Skyscrapers in Chicago
Category:1992 establishments in Illinois