The Gulbarga Fort was built by Alauddin Hasan Bahman Shah, the ruler of the Bahmani dynasty.
The fort has an area of 0.5 acres (0.20 ha) and periphery length of 3 kilometres (1.9 mi). It is well fortified with double fortification. A 30 feet (9.1 m) wide moat surrounds the fort. The fort is a monumental structure highly fortified with 15 towers mounted with 26 guns; each gun located inside the fort is 8 metres (26 ft) long and is still well preserved.It is said that the Bahmani Sultanate claimed lineage of the Sasanians and the motifs on their buildings, particularly the crowns of the arches that they built depicted an emblem of the crescent and occasionally a disk that was closely reminiscent of the crowns of the Sassanian emperors. Many religious or secular buildings in the fort area depict this emblem.