The ancient city of Pamukkale, Turkey is a must-see destination for any traveler. Located in the Denizli Province of southwestern Turkey, the city is home to the famous travertine terraces, which are a series of stepped pools
From Wikipedia
Pamukkale, meaning "cotton castle" in Turkish, is a natural site in Denizli Province in southwestern Turkey. The area is famous for a carbonate mineral left by the flowing of thermal spring water. It is located in Turkey's Inner Aegean region, in the River Menderes valley, which has a temperate climate for most of the year.