Tlos antique city, with an estimated historical past dating back to 2.000 BC, is one of the most prominent settlements, attracting experts and visitors by virtue of its ruins of splendor.

The city walls to the north-east of the acropolis are from the early Roman Era, and the rock tombs are fine samples of Lycian culture. The city walls on the south-east were built during the Roman Period and were repaired by The Byzantians. The group of the buildings on top of acropolis were erected as residences of Ali Agha, who was appointed as the governor of the region during the 19th Century.

On the site of Tlos, the agora, rock tombs, sarcophagi, stadium, acropolis, public baths, church and theater are major ruins.

The city is located on a cliff overlooking Xhantos Valley, where numerous civilizations have left their traces.