Around 500 meters high steep slopes and naturally protected acropolis hill are reinforced by walls. There are temple tombs carved into the rocks on the hillside while climbing to Tlos. The most magnificent of these tombs is the carved rock tomb, which is said to have belonged to Bellerophontes, where Bellerophontes was depicted as fighting the three-headed monster Chimera on the winged horse Pegasus. Of course, if Bellerophontes is a Greek hero of Mythological and his name is mentioned in the Iliad epic, its correctness is discussed. (For information-https: //tr.wikipedia.org/wiki/Bellerophontes) In the entrance there are two columns, a three-part wall, a door adorned with decorations in the middle, and the doors leading to the burial chamber. At the foot of the acropolis are several rows of seats, stadium, baths, theater and church ruins. There are nine-meter-wide Lycian (Lycian) wall remains in the flat below the castle. The six-arched gate stands in the south of the city agora and the Roman walls are seen. The important structure of Tlos is its theater. However, the stadium is also of great importance. Tlos is also known as the city that organizes the most sports competition in Lycia.