In downtown Riyadh, the Saudi Arabian government has revealed plans for the "Mukaab", a cube-shaped skyscraper that will be at the heart of the new Murabba district in downtown Riyadh. Measuring 400 meters in height, width, and length, the Mukaab is intended to be the largest manmade structure in the world. The construction of the project began in 2023, and is set to be completed in 2030.