Mukaab

The Mukaab (mukaʻʻab, lit. 'cube', [mukaʕʕab]) was a planned 400-meter (1, 300 ft) tall cube-shaped skyscraper in the al-Qirawan district of Riyadh, Saudi Arabia, one of the five neighborhoods of the planned real estate development of New Murabba. Launched in February 2023, its cuboidal layout and design were inspired by the Murabba Palace. If completed, the Mukaab would have been the world’s largest building by volume. In January 2026, construction of the Mukaab was suspended.

Building data from Wikidata (CC0); heights normalised. Summary from Wikipedia (CC BY-SA).