Padmadurg
Padmadurg, also known as Kasa fort, is one of five historical sea forts built by Shivaji Maharaj and located in Raigad District Maharashtra, India. It was built by Marathas to challenge another seaport Janjira which was controlled by Siddis. History. Padmadurg is one of the sea forts built by Maratha King Chhatrapati Shivaji Maharaj in 1676 in order to control the activities in the Arabian sea. It is located in the northwest direction of the Janjira fort at a distance of about 4 km. During cleanup activities in 2012, ASI authorities found around 250 cannonballs of historical value. The  sea fort of Padmadurg is not as big as Janjira but still the fort can be visited and enjoyed. Visiting the fort requires taking permission from the Customs/Navy. The fort was not only a part of Sindhudurg's defenses but was also Chhatrapati Shivaji Maharaj main ship construction yard. This fort can also be viewed from Janjira. There was a belt of land from Dandi seashore to Padmadurga but it got blown away under the water in 2004. This fort can be accessed by boats. Boats are mainly available from Murud-Koliwada. Restoration. The fort is included in the  protected monuments list of Archaeological Survey of India, but as on 2011, the fort and the area is in neglected state and ASI is unable take restoration work for want of resources. During cleanup activities in 2012, ASI authorities found around 250 cannonballs of historical value. When Maratha King Chatrapati Shivaji Maharaj decided to take on the Siddis of Janjira, his admiral, Daulat Khan, built this fort on an island next to Janjira. The rock, on which the fort was built, was called Kasa and the fort was named Padmadurg. The fort has six bastions. Maratha King Chatrapati Shivaji Maharaj  had said about it that, "By constructing Padmadurga he set up another Rajpuri to overshadow the Rajpuri of the Siddis."