Jahanpanah is the name of the fourth city of Delhi, built by
Muhammad Bin Tughluq (1325-51) by enclosing the then inhabited area
between Qila Rai Pithora and Siri, the first two cities of Delhi.
The stone-built walls of the city have now been removed over long stretches by the needs of the expanding suburban town-ships of Delhi. The walls cross the Delhi-Mehrauli road about 14.5-km from Delhi, and can be seen at several points, such as to the north of the Indian Institute of Technology, to the north of Begampuri and south of Khirki mosques, to the north of Chiragh-Delhi, at Satpula and close to the Hauz-Rani Gate of Qila Rai Pithora.
In a small-scale excavation carried out in 1964-65 a portion of the walls of Jahanpanah near its junction with the eastern wall of Qila Rai Pithora was exposed. The excavation revealed three stages of construction and additions, with rough and small stones in the foundations and a neat ashlar face on the exterior in the wall above the ground.