A sea-fort after which the district was named Sindhudurg is the most prominent landmark of this Konkan region. Chhatrapati Shivaji maharaj built this seafort between 1664-67 AD. The Sindhudurg fort is constructed on Kurte island with foundation laid on molten lead. One of the best preserved sea forts Sindhudurg fort has a four kms long rampart with 42 bastions. The fort is approachable from the Malvan jetty by boat.