Yeni Castle (Yeni Kale) is located in the Kocahisar Village of the Kahta District in Adıyaman. The present form of the castle, which dates back to the Hittites, was made during the Mamluks period. The castle was also used during the Ottoman period. It is known that the castle was conquered by the Urartu, Part, Commagene, Romans, Sassanid and Arabs.

There are numerous inscriptions on the entrance gate of the castle, on the mosque, in the eastern bastion and at the entrance gate of the castle. The inscription on the entrance door of the castle mentions the names of Memluk Sultan Al-Mansur Qalawun, while the inscription in the mosque mentions Sultan Al-Ashraf Salah ad-Din Khalil ibn Qalawun, and the inscription at the entrance door of the palace refers to Sultan an-Nasir Muhammad. Inside the castle there is a mosque, a prison and a dungeon, a tower with pigeonry, cisterns, a hammam and a secret waterway flowing to the Kahta River (Nymphaios).