Termessos Ancient City is an important ancient city founded by Solyms, descendants of Luwians, one of the oldest peoples of Anatolia, in the valley between the peaks of Solymos Mountain, which is called "Güllük", in the southwestern part of the Pisidia Region known as "Milyas". . It is one of the most striking ruins preserved in the forest and is located in the National Park of the same name. The remains of Güllük Mountain can be reached by a private road that climbs to the left from the 24th kilometer of the Antalya-Korkuteli highway. The arrival of the city on the stage of history occurred when Alexander the Great besieged the city in 333 BC and the Termessites did not surrender the city by making a strong defense. After the death of Alexander, the city was taken by the Ptolemy. İ.Ö. The people of Termessos, who captured the neighboring city Isinda in 189, were punished by the Roman Forces Commander Manlius Vulso in Anatolia upon the complaint of the people of Isinda. There was probably a war between Termessos and the Lycian Union at the same time. İ.Ö. It was accepted and approved by the Roman Senate that Termessos, who had "friendship and alliance" with Rome in the 71st, was independent in his affairs and that they would make their own laws.

İ.Ö. It is known that Amyntas of Galatians, from 36 to 25, also ruled Termessos with other cities of Pisidia. It is understood from the coins minted that the city maintained its independence during the Roman Empire period. There is no information about the state of the city in the Byzantine period and later periods. After the city of Termessos was abandoned, it did not witness a new settlement and it can be shown as one of the most robust and well-preserved ruins apart from earthquakes and natural destruction. The ruins of the city start with the Hellenistic Period wall near Yenicekahve on the Antalya-Korkuteli highway and continue until the summit of Güllük Mountain. When you follow the path that climbs into the city after the parking lot, you can see the step and monumental entrance of the temple in Ionic order built in the reign of Emperor Hadrian on the right. If you continue to climb southward from the area where the lower city walls and the water source are located, you will reach the Gymnasium on the left, where the first floor is still standing. To the southwest of the building, which consists of many rooms and halls, is the colonnaded street with shops behind. Channels showing the perfection of the sewer network can still be seen in the immediate vicinity. Upon reaching the plain, the area with many official buildings of the city is reached on the left of the path leading to the forest observation point. The first ruin on the plain belongs to the agora. The portico or stoa to the west, II. It was built in the period of Attalos (BC 159-138) and is in Doric order. To the east of the agora is the theater, leaning on the slope and in view of the Antalya Bay. Approximately 100 meters southwest of the theater is the parliament building, which stands up to the roof height. On the plain east of the agora, 5 interlocking cisterns are unique in terms of depth and width. To the southwest of the city are the ruins of an exceptionally beautiful Roman-type villa called the "Founder's House". The building, whose façade wall is in Doric order and reaches a height of 6 m, is named "Founder's House" due to the inscription on the left side of its door.

Termessos has many temples and very large cemeteries. The variety and decorations of his tombs are very rich. The tomb of Alketas (319 BC), one of the important commanders of Alexander the Great period, and others are also important in terms of shedding light on the history of the city. Next to the monumental tombs, the shield-motif sarcophagus depicting many of their warriors occupies a large area in the cemetery area. The most interesting work belonging to Termessos in the Antalya Museum is the "Dog Sarcophagus" exhibited in the "Hall of Tombs". The poetic inscription written by the owner of the dog Stefanos is of special importance as it is unique.