Lohagarh fort or the Iron fort was built in the early 18th century by the Jat ruler, Maharaja Suraj Mal. The Lohagarh fort is a living testimony to the chivalry and bravery of the Jat rulers of Bharatpur. Due to its impregnable defenses the fort came to be known by name of Lohagarh. The Lohagarh fort was surrounded and protected by deep moats. Though Lohagarh fort lacks the flamboyance of other forts of the region but its strength and magnificence is matchless.

Some fascinating monuments in the fort are Kishori Mahal, Mahal Khas, Moti Mahal and Kothi Khas. Suraj Mal built the Jawahar Burj and Fateh Burj inside the fort to commemorate his victories over the Mughals and the British. There is an Ashtadhatu (eight-metal) gateway, having paintings of huge elephants. Because of all these above mentioned qualities and features the Lohagarh fort was able to thwart many British attacks. The British laid siege to the Lohagarh fort four times but had to raise the siege on all occasions