
It was later completed or at least renovated by Humayun. Infact, the southern gate of the fort is known by the name of Humayun Darwaza. This gate as well as Talaqui Darwaza (the forbidden gateway) on the north combines Islamic pointed arch with Hindu Chhatris and brackets. Old Fort has 2-km long fortifications, with three gates that have fortresses on both the sides. Circling the fort is a wide moat, connected to river Yamuna that once used to flow on the eastern side of the fort. Excavations were carried out in the Old Fort area that came up with 1000 BC dated pieces of painted gray ware that were said to be connected with Mahabharata.
The other attractions of the Old Fort of Delhi include the mosque built by Sher Shah in 1541, a lake with boating facilities and Zoological Park situated nearby. Then, there is Sher-Mandal, a double-story, red sandstone and marble octagonal tower. There is an octagonal chhatri crowning the tower, adorned with glazed tiles and incised and painted plasterwork on the inside. Last but not the least, is the sound and light show of the Purana Quila that showcases 5000 years of history of the city of Delhi. The nine pools of water come alive in the light and take you on a journey of the royal past of Delhi.