
The ventilation of the place has been so designed to let the cool breeze cool down the place in the summers and the massive gates are studded with large pointed iron spikes to prevent elephants of the enemy trying to force in through the gates. In more prosperous times, the 10-km long road from Golconda to outer Hyderabad was a world-renowned market for jewellery, diamonds, pearls and other gems. The Golconda Fort has been the seat of Deccan rulers since 13th century till Hyderabad was founded in the 16th century. It was founded originally by the Kakatiyas as a mud fort and was expanded later by the Qutub Shahi kings who turned it into a massive fort of granite. The chief attractions of the fort are its system of acoustics, which ensures that even a hand clap at below the dome at the entrance can be heard clearly at the 'Bala Hissar', the highest point almost a kilometre away, palaces, the famous 'Rahban' cannon, the tombs of the Qutub Shahi kings, and the Sound and Light show conducted by Andhra Pradesh Tourism.