The best time to participate in these activities is between April and November. One pays a modest entrance fee to visit the beaches of Küçükçaltýcak, Büyükçaltýcak and Topçam, along with the ancient cities of Olympos and Phaselis. The best time to participate in these activities is between April and November. One pays a modest entrance fee to visit the beaches of Küçükçaltýcak, Büyükçaltýcak and Topçam, along with the ancient cities of Olympos and Phaselis.