Built by Shivaji and dating from 1664, this monstrous fort lies on an offshore island and can be reached by frequent ferries (9am to 5.30pm, ₹50) from Malvan’s harbour. It’s not as impressive as Janjira up the coast, and today lies mostly in ruins, but it remains a powerful presence. You can explore its ramparts and the coastal views are impressive. Boatmen allow you one hour on the island.