The Golconda Fort is situated due west of Hyderabad. The fort was founded as early as the twelfth century by the Kakatias. The Qutub Sahi kings converted this fort into a mighty fort with granite walls and ramparts that extend to around 5 kilometers in circumference. The perimeter of this massive fort measures around 11 kilometers, with 15 to 18-foot-high walls. There are as many as 70 ramparts besides 8 huge gates.
Golconda was once the market city for its diamond trade. Darya-e Nur, meaning ‿sea of light‿, measuring 185 carats and housed now in Iran, was mined here. Many other famed diamonds—including the Kohinoor Diamond, Nur-Ul-Ain Diamond, the Hope Diamond, and the Regent Diamond—are believed to belong to the mines in this region.
Highlight of the fort is a light-and-sound show. The timings of the show are different during summers and winters. During November–February, the shows begin at 6:30 pm, and during March-October, the shows begin at 7 pm. On Wednesdays and Sundays the shows are presented in English; on Tuesdays, Fridays, and on Saturdays, in Hindi; and on Thursdays, Telugu.