Siri was the third city of ((Delhi)). Allauddin Khilji had created this city. It is worth mentioning here that the 'Slave' dynasty of Qutubuddin was followed by the line of Khilji rulers. The Saljuqian influences are the most remarkable feature in the buildings from this period. Siri Fort is famous even today. A large reservoir called Hauz Khas was another accomplishment of the city of Siri.