Burj Khalifa It is the tallest artificial structure in, the world standing at 829.8 m (2 722 ft), Construction began on 6, January 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) development called Downtown Dubai at the 'First Interchange' along Sheikh, Zayed RoadNear Dubai 's main business district. Building with the most of layers,162 layers