Kalyangad Fort is a citadel situated on the rim of the Nandgiri hill in the mountain ranges of Mahadev, Satara. Silhara King Bhoj II built it. It was then surrendered to King Shivaji in the 16th century, after which Bajirao possessed it. At the end of the last Maratha war, it fell in the hands of General Pritzler in the early 18th century. In 1862, it was characterised to be in a condition as severe as uninhabitable without any supplies or water. It is located at an elevation of 3500 feet. There is a temple of Lord Hanuman in the fort, which is the only thing that is intact in this fort.
The architecture is said to be alluring. There are two gates to this beautiful fort, located at north and east. The pond, situated at the entrance is about 30 metres deep and is supported by carved pillars. It is said to have two statues of Lord Ditta and Lord Parshavnath at the corners of these caves. There are few ruined temples of Lord Ganesha and a memorial of Kalyan Swami. This fortress is known for trekking, rock climbing and hiking. It is located at about 23 kms from Satara and 75 kms from Mahabaleshwar. The best time to visit this grand fort is from November to February.