Did you know that the Surat Diamond Bourse in India is now officially the largest office building in the world as of 2025 — surpassing the Pentagon in size?

This massive complex spans over 7.1 million square feet, accommodating more than 65,000 diamond industry workers across nine interconnected towers. Designed to streamline India’s booming diamond trade, the entire structure is so vast that it functions like a miniature city — complete with its own security checkpoints, dining areas, and business hubs, all under one roof.

Top Stories