The Saudi Arabian government has revealed the design for the Mukaab, a cube-shaped supertall skyscraper that will become the center of the New Murabba district in downtown Riyadh. The Mukaab aims to become the largest built structure in the world, measuring 400 meters in height, width, and length. The building will be situated in the North West of Riyadh, in a 19 square kilometers area that will become one of the largest downtown developments in the world.