Burj Khalifa (Arabic: برج خليفة, "Khalifa touer"), kent as Burj Dubai prior tae its inauguration, is a skyscraper in Dubai, Unitit Arab Emirates, an is the tallest man-made structur in the warld, at 829.8 m (2,722 ft).
Construction began on 21 September 2004, wi the exterior o the structure completit on 1 October 2009. The biggin offeecially opened on 4 Januar 2010, an is pairt o the new 2 km2 (490-acre) development cried Dountoun Dubai at the 'First Interchynge' along Sheikh Zayed Road, near Dubai's main business destrict. The touer's airchitecture an engineering wur performed bi Skidmore, Owings an Merrill o Chicago, wi Adrian Smith as chief airchitect, an Bill Baker as chief structural engineer. The primary contractor wis Samsung C&T o Sooth Korea.