HISAR.The city of Hisar was founded by a Muslim ruler, Firozshah Tughlaq in 1354 A.D.'Hisar' is an Arabic word that means 'Fort'.The city, which we know today as 'Hisar', was ORIGINALLY called 'Hisar Firoza (also Hisar-e-Firoza) or in other words the 'Fort of Firoz'.Hence option 1 is correct.Firoz Shah Palace Complex is located in the city of Hisar in HARYANA, India.It was built by Firoz Shah Tughlaq in 1354 AD.The original town of Hisar was a walled settlement inside the fort with four gates, DELHI gate, Mori gate, Nagauri Gate and Talaqi Gate.The palace consists of a MOSQUE known as Lat ki Masjid.Lat is a sandstone pillar about 20 feet high and was earlier an Ashokan pillar.The place has also a Diwan-e-Aam. Gujri Mahal is another palace located near the palace complex also built by Firoz Shah for his wife Gujri.