GATEWAY OF RAI PITHORA'S FORT (LADO SARAI)-
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 Batuta describes Budaun gate, probably, as the main entrance to the city.