Burj Khalifa (Arabic: برج خليفة “Khalifa Tower”), recognized as Burj Dubai prior to its inauguration, is a skyscraper in Dubai, United Arab Emirates, and is currently the tallest structure in the globe, at 829.84 m (2,723 ft). Building commenced on 21 September 2004, with the exterior of the structure concluded on 1 October 2009. The creating formally opened on 4 January 2010, and is portion of the new 2 km2 (490-acre) flagship advancement termed Downtown Dubai at the ‘First Interchange’ alongside Sheikh Zayed Road, in the vicinity of Dubai’s primary enterprise district. The tower’s architecture and engineering have been done by Skidmore, Owings and Merrill of Chicago, with Adrian Smith as chief architect, and Invoice Baker as chief structural engineer. The key contractor was Samsung C&T of South Korea.