Tughlaqabad Fort is a ruined fort in Delhi, stretching over 6 km, built by Ghiyas-ud-din Tughlaq, the founder of Tughlaq dynasty, of the Delhi Sultanate of India in 1321, as he established the third historic city of Delhi, which was later abandoned in 1327. It lends its name to the nearby Tughlaqabad residential-commercial area as well as the Tughlaqabad Institutional Area. Tughlaq also built Qutub-Badarpur Road, which connected the new city to the Grand Trunk Road. The road is now known as Mehrauli-Badarpur Road. Also nearby is the Asola Bhatti Wildlife Sanctuary, Dr. Karni Singh Shooting Range and Okhla Industrial Area.
Ghazi Malik was a feudatory of the Khilji rulers of Delhi, India. Once while on a walk with his Khilji master, Ghazi Malik suggested that the king build a fort on a hillock in the southern portion of Delhi. The king jokingly told Ghazi Malik for building the fort himself when he would become king.
In 1321, Ghazi Malik drove away the Khiljis and assumed the title of Ghias-ud-din Tughlaq, starting the Tughlaq dynasty. He immediately started the construction of his fabled city, which he dreamt of as an impregnable, yet beautiful fort to keep away the Mongol marauders. However, destiny would not be as he would have liked.
Ghias-ud-din is usually perceived as a liberal ruler. However, he was so passionate about his dream fort that he issued a dictate that all labourers in Delhi must work on his fort. Saint Nizamuddin Auliya, a Sufi mystic, got incensed as the work on his baoli (well) was stopped. The confrontation between the Sufi saint and the royal emperor has become a legend in India. The saint uttered a curse which was to resonate throughout history right until today: Ya rahey ujjar, ya basey gujjar which can roughly be translated to "either remain inhabited or would live gujjars". So, after the fall of sultanate, Gujjars of the area captured the Qila and till date village Tughlakabad is situated in it.