Chitradurga Fort

The well-maintained ruins of sprawling Chitradurga Fort are a hidden, lesser-known gem in the heart of the Deccan Plateau northwest of Bangalore, on the way to Hampi. Much of the fort was built by the Palegar Nayakas between the 15th and 18th centuries.
It was later expanded by Hyder Ali, who defeated the Nayakas. Its rocky landscape on a granite hill is peppered with boulders and valleys. Notable features include seven circular walls, 19 gateways, 35 secret entrances, four invisible passages, 2,000 watchtowers, 18 temples in the upper fort, and a huge temple in the lower fort.