The name Sindhudurg in Marathi means a Fort build on Ocean or Ocean Fort. Constructed within a span of 3 years from 1664-1667 by King Shivaji by deploying 100 Portuguese architects, specially invited from Goa and over 3000 strong workforce the fort stands tall on the "Kurte" island.
It is believed that 4000 mounds of iron was casted for creating the base and lay the foundation stone for the fort. Hiroji Indulkar, a noted architect of that era supervised the construction. The fort is spread over 50 acres of land and boasts of a 9.2 mtr high and 3 mtr rampart. The rampart is 4 Km long and is studded with 42 bastions. The Fort houses the temples of Hanuman, Jarimari and Goddess 'Bhavani’.