Antiphellos, known as Habesos or Habesa in the Lycian language, is one of the old settlements of the Lycian Region. The city, which took the name Antiphellos after it, means "across the rocky ground", "opposite Phellos". It is known that it is one of the member cities of the Lycian Union and is the port of the city of Phellos in the north and has been living since the 6th century BC. In the Hellenistic Period, commercial ventures gain importance and Antiphellos develops more quickly in response to the decline of the main city, Phellos, and becomes an important port city during the Roman Empire. Antiphellos has been known as a commercial city since the middle of the 2nd century BC, even though it was limited to a single vote in the Lycian Union, with the coins it minted and issued on behalf of the union. 'Ice Kas' The ruins of the ancient city in the city continue around the district and along the peninsula extending in the east-west direction. Remains of the Hellenistic city walls with rectangular stonework can be seen at the beginning of the peninsula and on the face facing Meis Island. In the southeast of the church, which has been converted into a mosque today, where the walls overlooked the harbor, there is a temple ruin with an unknown temeno. The temple's temeno was made in rectogonal masonry with bossage. The original building was built in the 1st century BC, the later addition was AD. It is dated to the 3rd century. The better preserved building in Antiphellos than the temple is the theater. The theater on the southern skirt of the Acropolis hill leans against the hillside and faces the sea with its twenty-six cavea. The rows of seats are divided into three parts by four vertical stairs, There is no diasoma. The theater, which is considered to be a Hellenistic work, does not have a static stone skene building. To the northeast of the theater is the tomb chamber, where twenty-four lady reliefs carved into the bedrock were found. It is dated to the 4th century BC from the shape of the women and the facade decorations. In the bazaar, there are well-preserved shipping projections such as a lion's head with a hyposorion, which has become the symbol of Kaş, and a gothic pedimented tomb with a Lycian inscription dating to the 4th century BC. There are many Gothic style or Lycian inscription rock tombs on the hill that borders today's Kaş from the northeast. The most interesting one among them is the tomb with a Lycian inscription on the second floor, which was built in the form of a Gothic arch. Centuries later, when the tomb was reused by a lady named Claudia Recepta, a Latin inscription was added. Apart from these, the Lycian type sarcophagi, which were built in later periods, between the water around the harbor and near the shore, are the other monuments of the city that have survived to the present day.