The Bahadurgarh Fort, on the outskirts of Patiala, was built in the 17th century by Nawab Saif Khan during the reign of Aurangzeb and was reportedly called Saifabad. Notable monuments from that period include the Diwan-e-Aam and an elegant mosque. The Nawab's tomb can also be found a short distance from the fort. Later, renamed after the ninth Sikh Guru, Guru Tegh Bahadur, to commemorate his stay here, it was renovated and a gurdwara built by Maharaja Karam Singh of Patiala in the 19th century. Since 1989, the Punjab Police Commando Training School has been located within the grounds.