Welcome to Sagalassos. Tiberius Gate. To visit the sprawling ruins of Sagalassos, high amid the jagged peaks of Akdag, is to approach myth: the ancient ruined city set in stark. The ancient site of Sagalassos, nestled in the Taurus Mountains, is among the most well preserved ancient cities in the country. View of ruins of antique Nymphaeum. Sagalassos Ancient City video, Burdur Turkey.