Rohtas Fort is a 16th-century fortress located near the city of Dina in Jhelum district of the Punjab province of Pakistan. It was built by Sher Shah Suri, the founder of the Sur Empire, to prevent the return of the Mughal emperor Humayun from his exile in Persia. The fort is one of the largest and most impressive in Punjab, with walls that extend for more than 4 km and are lined with 68 bastions and 12 monumental gateways. The fort is a masterpiece of Muslim military architecture, blending the styles and traditions of Turkey and the Indian subcontinent. The fort has many decorative elements, such as carvings, inscriptions, plasterwork, and glazed tiles. The fort was never taken by storm and has survived intact to the present day. It was declared a UNESCO World Heritage Site in 1997.