ierapolis' location atop Pamukkale's tourist-magnet travertines is quite spectacular, and the ruins of this ancient spa city are beautifully maintained. Founded as a curative centre around 190 BC by Eumenes II of Pergamum, it prospered under both the Romans and Byzantines, when large Jewish and Orthodox Christian communities comprised most of the population. Recurrent earthquakes brought disaster, and Hierapolis was finally abandoned after an AD 1334 tremor. When visiting, don't miss the Roman Theatre, the Agora and the on-site museum.

Pamukkale has been made eternally famous by the gleaming white calcite travertines (terraces) overrunning with warm, mineral-rich waters on the mountain above the village – the so-called ‘Cotton Castle' (pamuk means 'cotton' in Turkish). Just above the travertines lies Hierapolis, once a Roman and Byzantine spa city, which has considerable ruins and a museum.