Firoz Shah Palace Complex is located in front of Hisar Bus Stand in the city of Hisar in Haryana, India. It was built by Firuz 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. Underground apartments are also located inside the complex. 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. Its construction was completed in 1356 and stands on a massive rectangular platform.

Jahaj Kothi Museum, named after George Thomas, is located inside Firoz Shah Palace Complex and maintained by Archaeological Survey of India.

The palace, known as Hisar-i-Firuza, located at a strategic point where the old Delhi Multan Road route branched to Khorasan (historic region which lies in northeast of Iran), was built by Firoz Shah Tughlaq in 1354. The construction was completed in 1356. The palace consists of a mosque, a Diwan-e-Aam, a palace for his wife, underground apartments and a granary. The restoration work of the palace started in 1924 and have since been gradually renovated until recent times. The complex has been declared as a Centrally Protected Monument by Archaeological Survey of India.

The artwork in the fort is the synthesis of Islamic architecture and Indian architecture. However, the mosque was built in Seljuk architecture.The palace is built of red sandstone. The material used in the construction of the fort was taken from the destroyed Hindu temples.

Extreme north and west side of this two-story Royal place complex lies a three-story above-ground and one-story underground watch tower that doubled as staircase connecting all stories of the place as well as serving as a corner passage between north and west side of the building. This is tallest structure in the entire complex.