Since 1979 work has continued on the castle and it has been converted into a museum. There are several galleries and the largest is used as an exhibition hall. Nimara Cave is located on Heaven Island near Marmaris. Excavations were carried out in 2007 and research has revealed the existence of a cult of Mother Goddess of Apollo. It is now been declared a protected area and shelters butterflies identical to those living in Butterfly Valley in Fethiye. There are many ancient sites in the area around Marmaris such as Amos, Syma and Bozburun for exploring. Tourists can take a day trip to Cleopatra Island in the Gulf of Gokova.
There is a wide variety of water sports available such as rafting, trekking and jeep safaris as well as two aquamarine parks for children. The ferry to Rhodos comes and goes twice a day and you can take a day trip there very easily. Some tourist enter and exist Turkey and Greece during the summer months via Marmaris.