The ruined fortress of Tughlaqabad is 8 km east of the famous Qutab Minar, on the Qutab-Badarpur Road.
The tomb of Ghiyas-ud-din Tughlaq, the founder of the dynasty who built the city, is located near the main entrance to the fort.
The nearby fort of Adilabad, south of Tughlaqabad Fort, was built by Ghiyas-ud-din`s son and successor, Muhammad bin Tughlaq.
It’s perched on a rocky hill, constitutes one third of the capital city of India.
It seems to be more or less octagonal, with a border of approximately 6.5 km. The ramparts of the fort, now in ruins, are between 10m to 15m high with fortresses and gateways at intervals.
The Tughlaqabad Fort at Delhi was built to serve a dual purpose, one of providing a defensive structure to the ruler and the second, to serve as his imposing capital.
It stands divided into three segments. The eastern segment is entered through the Qutub-Badarpur road. It is a rectangular area enclosed within high walls and bastions and used to serve as the citadel. On the west side of the fort is a wider area that once contained the palaces and is surrounded by walls and bastions. A huge reservoir stands on the southern side of the Tuglakabad Fort at Delhi.
Bunds were put up between hills to the east to create the reservoir, which is linked with Ghiyas-ud-Din`s tomb through a causeway.