Selinus is located in the area of today's city Gazipaşa.
The town is situated on a mountain at the mouth of the river Selinus (today Musa Çay) and spread into the plain in Roman times. Remains of the city wall, an aqueduct and a theatre have been preserved.
The most famous preserved building is the cenotaph of Trajan, who died here in Selinus on August 8, 117 on his way back to Rome. He came from a campaign against the Parthians in Mesopotamia. His successor, Emperor Hadrian, named the city Trajanopolis and had a magnificent cenotaph built in Selinus.
In Byzantine times, when the city became a bishopric, it got its old name back.

Little is known about the history of the city up to Roman times. It was founded by the Phoenicians according to ancient sources in the 6th century BC. Assyrian sources report of a seafaring city "Sallune" at this point. In 197 B.C. it was subjugated by Antiochus III. 269 The Persians conquered the city.
The rather well preserved castle on the Acropolis is a small Armenian fortress from the 12th century.

A building originally located on a square surrounded by colonnades (so-called Şekerhane Köşkü), known as Trajan's cenotaph, is probably Seljuk in its present form, but probably stands on the site of the cenotaph, a building of Corinthian order, many of which were reused.

The Odeon

Roman bath

Remains of the aqueduct

The ancient city was supplied with water by an aqueduct. Several remains of this building have been preserved.