About 77 West Wacker Drive
77 West Wacker Drive, also known as the United Building, is an office building in Chicago. Finished in 1992, the building rises to a height of 668 ft (204 m) with around 944,000 square feet (87,700 m) of interior space. The building, with 51 floors, was designed by Ricardo Bofill. It was formerly known as the RR Donnelley Building when the RR Donnelley printing company was the primary tenant. RR Donnelley moved its corporate headquarters to a different location in May 2005, and in 2007 the building became the corporate headquarters of United Airlines. This is the World Headquarters of Chicago-based United Airlines. The deal included naming rights to the building. Microsoft is a major tenant in the building, occupying multiple floors. The building was used in the movie The Negotiator (film). The building has a newsletter called "FOCUS," published by Prime Group Realty Trust. By 1990, Keck, Mahin & Cate, a law firm, considered moving out of its space in the Sears Tower and moving into a potential new development, which would become 77 West Wacker Drive. Brokers who were familiar with the lease negotiations stated that Sears was trying to keep Keck, Mahin & Cate in the building.