Olymposis the second most important harbour city after Phaselison the southern coast of Antalya. The city takes its name from Mount Tahtalı, one of the western extensions of the Taurus Mountains 16 kilometres to the north, with a height of 2,375 metres. It is within the borders of Beydağları-Olympos National Park. Although the exact date of foundation is unknown, Olympos, mentioned in the Lycian Union coins minted in 167-168 BC, is one of the six cities with three voting rights in the Lycian Union.

The ruins of Olympos that have survived to the present day are generally located at the mouth and on both sides of a river that flows rapidly from east to west towards the sea. In the ancient period, the river bed dividing the city in two was enclosed in a canal and both sides were used as piers and connected to each other by a bridge. Today, one leg of the bridge is still standing.

On the south bank, the polygonal moulded wall of the Hellenistic Period and the section next to it indicating Roman and Byzantine repairs can be seen. The small and steep acropolis near the river mouth contains the remains of buildings from the later periods. The small theatre with Hellenistic foundation and Roman repairs on the south bank of the river is quite dilapidated, but one side of the entrance is well preserved.

Another important structure of the city is the temple gate located 150 metres west of the river mouth. It is understood from the architectural fragments that it belongs to a small temple in Ionic order and from the statue pedestal in front of the gate that it was built in the name of Roman Emperor Marcus Aurellius (172-173 AD). The most interesting among the ruins is the Antlya Museum.