South of Anatolia, at 18 km at the east of Antalya, the ancient site of Perga is located 3 km west of the Aksu river, which was the Kestros at the time of ancient Greece.
During the first millennium BC, the city was Lydian then Persian before his submitting without a fight to Alexander the Great. Then, under Seleucid rule and the kingdom of Pergamum, it became Roman. It owned the largest stadium in Asia Minor:
According to ancient mythology, the town was founded after the Trojan War by the legendaries heroes Kalchas and Mopsos. The excavations of the courtyard behind the main gate of the city, reveal, on the base of statues, the names of those two heroes.
In Hattusa archives, Parha and the Kastaraya River are both mentioned in the treaty of Kuranta that defined the borders of Tarhuntassa: "Towards the district of the city of Parha the Kastaraya river forms the border. If the Great King began a campaign beyond Kastaraya, and grabs Parha by force of arms, the conquered territories would be allocated to Kuranta."
Two versions of this treaty have been found, dating from the second half of the 2nd millennium. They clearly show that the Kingdom of Tarhuntassa was to the east of the border river. And Parha then appears as belonging to the country of Lukka.
The phonetic proximity and the mention of the river Kastaraya leave little doubt about the connection between Parha and Perga. However, should we believe that the Trojan War was before the writing of those two treaties?
My notes of veracity :
Perga was the Parha of the Hittites: 4/5
The Kestros was the Kastaraya River: 4/5