You can definitely visit alot of beaches here, but you will find some beaches here that are not crowded and so peaceful. Ratnagad fort, Purnagad, Ganpati Pule, Marleshwar temple(You can see a beautiful waterfall from here so visit during monsoon). some places which you can visit is Ratnagiri. People who like seafood can try a variety of seafood dishes here. apart from the beaches there are also few waterfalls and temples which you can visit. Konkan looks really great during monsoon.