: برج خليفة
Tower") known as Burj Dubai
prior to its inauguration, is a skyscraper in Dubai
, United Arab Emirates, and is currently the tallest manmade structure in the world
, at 829.84 m (2,723 ft).
Construction began on 21 September 2004, with the exterior of the structure completed on 1 October 2009. The building officially opened on 4 January 2010, and is part of the new 2 km2 (490-acre) flagship development called Downtown Dubai
at the 'First Interchange' along Sheikh Zayed Road
, near Dubai's main business district. The tower's architecture and engineering were performed by Skidmore, Owings and Merrill
, with Adrian Smith
as chief architect, and Bill Baker
as chief structural engineer.
The total cost for the project was about US$1.5 billion; and for the entire "Downtown Dubai" development, US$20 billion. In March 2009, Mohamed Ali Alabbar
, chairman of the project's developer, Emaar Properties
, said office space pricing at Burj Khalifa reached US$4,000 per sq ft (over US$43,000 per m²) and the Armani Residences
, also in Burj Khalifa, sold for US$3,500 per sq ft (over US$37,500 per m²).