Because of Turkey’s location on top of a major geothermal belt, it is among in the top seven countries in the world for quality and quantity of thermal springs with over 1000, with temperatures ranging from 20ºC to 110ºC. Most are in the Marmara and Aegean regions and because of their proximity to popular travel destinations such as Istanbul, Izmir, Pamukkale and Marmaris, public transport is easy. Many of Turkey’s historical places developed because of their springs, like the ancient city of Hieropolis which was buil upon the rich mineral springs of Pamukkale, and the ancient Lydian city of Kaunos, whose people took baths in the rich mineral mud of Lake Koycegiz.