Pamukkale has been formed when a spring with a very high content of dissolved calcium bicarbonate cascaded from the edge of the cliffs, after which cooled down and hardened leaving calcium deposits. This structure then formed into natural pools (with a temperature of around 35 °C), shelves and ridges, which tourists could plunge in the warm water. According to scientists, if this mineral-rich water had always flowed at this pace, the terraces must have started forming some 15,000 years ago. The hot springs of Pamukkale have been used since as thermal spa in Roman times. Most hotels in Pamukkale are offering thermal spa facilities with trained and qualified experts. Very close to Pamukkale, the Karahayit and Golemezli thermal springs cures illnesses like rheumatizm, heart diseases and atherosclerosis.
Hieropolis antic city near Pamukkale was built by the Pergamum King Eumenes in 197 BC. The city is an important city for Christianity because one of the apostles of Jesus, St. Philip was killed here and a monumental tomb was built for him at Hieropolis. The famous Apollon Temple, St. Philip Monument, the antic theater, Roman Gate, Agora, the Aquaducts, Direkli Church and the Roman Bath that is used as a museum today are the main constructions of Hieropolis at Pamukkale. Be sure to visit the Pamukkale Archeology Museum at Hieropolis. There are 3 more antic cities near Pamukkale that has been excavated for the last 3 years, Laodikya, Tripolis and Colossea.
Other places worth visiting in the Pamukkale Region are the Guney Waterfall, the so-called "underwater Pamukkale", Kaklik Cave and the Kartal Lake.