Time Warner Center is a twin-tower building developed by AREA Property Partners (formerly known as Apollo Real Estate Advisors) and The Related Companies in New York City. Its design, by David Childs and Mustafa Kemal Abadan of Skidmore, Owings & Merrill, consists of two 750 ft (229 m) twin towers bridged by a multi-story atrium containing upscale retail shops. Construction began in November 2000, following the demolition of the New York Coliseum, and a topping-out ceremony was held on February 27, 2003. The property had the highest-listed market value in New York City, $1.1 billion, in 2006. Originally constructed as the AOL Time Warner Center, the building encircles the western side of Columbus Circle and straddles the border between Midtown and the Upper West Side. The total floor area of 260,000 square metres (2,800,000 sq ft) is divided between offices (notably the offices of Time Warner Inc. and an R&D Center for VMware), residential condominiums, and the Mandarin Oriental, New York hotel.