Pamukkale, meaning “Cotton castle” in Turkish is a natural site 18km north of Denizli, just under Hierapolis. It contains of hot springs and travertines, terraces of carbonate minerals left by the flowing water. The marvelous landscape of Pamukkale It is recognized as a UNESCO World Heritage Site together with Hierapolis. The underground volcanic activity which causes the hot springs also forced carbon dioxide into a cave, which was called the Plutonium meaning place of the god, Pluto. This cave was used for religious purposes by priests of Cybele, who found ways to appear immune to the suffocating gas. Today visitors can enjoy the baths, but can only visit certain springs.
Hierapolis was an ancient greco – roman city, located 18 km to the north of Denizli in the south west of Anatolia.
Hierapolis was founded as a thermal spa, the hot springs there have been used as a spa since the 2nd century BC, where people came to soothe their ailments. Today visitors can enjoy the Sacred Pool, where you can swim amidst the historical remains of Hierapolis. The Sacred Pool is now located inside the Pamukkale Hotel. The ancient ruins of the city include: the great baths, the main street, the monumental gates, the spectacular theatre which has been well preserved and the temples. Hierapolis is a UNESCO World Heritage Site.