We visited Tlos in spring when the snow on the mountains provided a magnificent backdrop to this ancient, ruined Lycian citadel which was subsequently inhabited by Romans, Byzantines and eventually Ottoman Turks. Entrance fee was 3 TL and this allowed us to wander up to the citadel passing wonderful examples of Lycian carved rock tombs, sarcophagi and the remains of Turkish baths and a Roman stadium. Despite being surrounded by history it was the all-round view which provided the most lasting spectacle.
You reach the Tlos from Fethiye by following the 400 highway towards Kalkan and following the signs for Tlos.
www.lycianturkey.com/lycian_sites/tlos.htm