WALLS OF RAI PITHORA'S FORT INCLUDING GATEWAYS AND BASTIONS FROM A RUINED GATEWAY NEAR BAGH NAZIR TO A BASTION IMMEDIATELY TO THE NORTH OF QUTB-TUGHLAQABAD ROAD (MEHRAULI)-
Prithviraja III, better known as Prithviraj Chauhan, had extended the Lal Kot by throwing up massive ramparts around it and this enlarged city is known as Qila Rai Pithora, the first of the so called Seven Cities of Delhi. The ramparts are 5 to 6 m in thickness and their extant height goes as high as 18 m and at places a moat runs on its outer sides. According to Timur, the rubble built ramparts
were pierced by thirteen gates, out of which Hauz
Rani, Barka and Budaun gates are still extant. Ibn
Batura describes Budaun gate, probably, as the main
entrance to the city.