On Astypalaia island has beautiful and deep blue beaches. On the southwest side of the island there is a beach, in Vatses area, with deep clear waters and huge pine trees that surround the whole area up to the beach. The route to the beach is 7km away from the center.
Also in the same area there is the cave of Negros that has unique stalagmites and stalactites. Pirates used to hide their treasures inside the cave. Access to the cave is on foot or by boat.