The newly-opened Surat Diamond Bourse in Gujarat, India, is a massive office complex made up of nine rectangular buildings interconnected through a central “spine”.

For 80 years, the Pentagon held the title of the world’s largest building, but it was recently dethroned by the Surat Diamond Bourse, a massive diamond-cutting and trading hub, that exceeds the Pentagon’s area of 66,73,624 sqft by almost 55,000 sqft. The sprawling 15-story complex covers more than 35 acres of land on the outskirts of Surat, in India’s Gujarat state and features over 4,700 office spaces and workshops, as well as 131 large elevators that make traveling between the nine buildings of the Surat Diamond Bourse a breeze. Interestingly, surpassing the Pentagon was never the plan; instead, Indian architecture firm Morphogenesis just struggled to meet the huge demand for space.