Supposedly built by Bellerophon at an altitude of more than a 1000 meters on the south-west side of modern-day Güllük Dağı (Antalya Province), not much is known about the history of the ancient city. But in 333 BC; it became known for its refusal to surrender to Alexander the Great, who failed to conquer the city and likened it to an eagle's nest. İn the 2nd century BC, Termessos was at war for unknown reasons with the league of Lycian cities, and in 189 BC found itself battling its neighbour Isinda. Eventually the city became an ally of Rome and was granted independant status in 71 BC by the Roman Senate.The ultimate end of Termessos came when its aqueduct was crushed in an earthquake, destroying the water supply to the city. Having no choice but to abandon the city, the inhabitants then left. Remaining relatively untouched for more nearly 2 millenia, this ancient city is well preserved and is a excellent destination for those who might be interested in it. Visitors to the mostly well preserved ancient city can still see the city's agora, theatre, official buildings (such as the bouleuterion) , Six temples , residences of the former inhabitants, shops as well as cemetaries and tombs.