Burj Khalifa is a skyscraper in Dubai and the tallest man-made structure ever built, at 828 m. It was known as Burj Dubai prior to its inauguration. The price of office space real estate had reached US$4,000 per sq ft in 2009. 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.

The tower is designed by Skidmore, Owings and Merrill, who also designed the Willis Tower (formerly the Sears Tower) in Chicago, Illinois and 1 World Trade Center in New York City, among numerous other famous high-rises. 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.