Hisar was founded in 1354 AD, as 'Hisar-e-Firoza' by Firoz Shah Tughlaq, who reigned over the Sultanate of Delhi from 1351 to 1388.[8][9] He built a walled fort with four gates, the Delhi Gate and Mori Gate to the east, the Nagori Gate to the south, and the Talaqi Gate to the west.[10] The construction of the fort started in 1354 AD and was completed in 1356 AD.[10] In the middle of the fort stood the Firoz Shah Palace.