According to the inscriptions of King Antiochus I; Arsameia is the summer capital and administrative center of the kingdom, which was founded in the beginning of the 2nd century BC by Arsemez, the ancestor of the Commagene, across the Old Kahta Castle on the east of the Kahta Stream. On the southern ceremonial road, there is the relief stele of Mithras, the Antiochos-Herakles handshake stele on the ritual platform, and the largest known Greek inscription in Anatolia in front of it. There is a tunnel starting from the place where the inscription was found and going 158 meters deep and a similar rock corridor to the west of the inscription. On the platform on the hill is the tomb temple and palace of Mithridates Callinichos.
It is also known as Cendere Bridge, Roman Bridge or Septimius Severus Bridge. It is located on the Ancient Cabinas (Cendere) Stream. By the order of the Roman Emperor Septimius Severus (193-211), the bridge was built by XVI. It was built by the Legion. Cendere Bridge is a magnificent monumental example of Ancient Roman architecture. Consisting of two arches, one main arch and one evacuation arch, the bridge is made of smooth cut stones, each weighing tons. The most interesting architectural feature of the bridge, which is 7 meters wide, 30 meters high and 120 meters long, is that it was built without the use of mortar. It is understood that one of the inscriptions on it was erected in the name of Emperor Septimius Severus, who built the bridge, and the other in the name of his wife Julia Domna. It is understood from the inscriptions on the balustrade of the bridge that the Cendere Bridge was repaired at different times during the Roman Period after its construction.