Ajmeri Gate, built in 1644, to the south–west of Shahjahanabad with a square plan, has high arched openings. It was one of the battlefields of the Sepoy Mutiny or the first war of Indian independence in 1857. The road, through this gate, leads to the city of Ajmer in Rajasthan, and hence its name. A lovely park surrounds the gate. The madrasa (Islamic school of learning) built by Nawab Ghaziuddin Bahadur father of the first Nizam of Hyderabad in 1811, west of the college lies the tomb of the founder and a mosque In the following years, it converted to Delhi college and was one of the constituent colleges of the Delhi University. The College has shifted to a new building now and the Anglo Arabic Senior Secondary School runs in the old building. Nearby outside a ditch, once lied remains of the underground apartments of Safdarjung, which at one point were one of the important sights of Delhi. At present, the old walls of the fort have been demolished and replaced by commercial buildings and residential complexes, but the gate on the west exists.