Housed in a colonial-era block, the Museum on India’s Struggle for Freedom tells the story of the Independence struggle. If you walk on through the dilapidated barracks, you’ll reach a deserted baoli (step-well), which the British used as a prison, and a causeway leading to the Salimgarh , a fortress built by Salim Shah Suri in 1546. It was likewise used as a prison, first by Aurangzeb, and later by the British; it’s still occupied by the Indian army, but you can visit the ruined mosque and a small museum.