Pamukkale meaning cotton castle is a natural site and tourist attraction in Denizli province Turkey. It is famous for its gleaming white calcite travertines (terraces) overrunning with warm, mineral-rich waters on the mountain above the village. The city contains hot springs and travertines, terraces of carbonate minerals left by the flowing water. People have bathed in its pools for thousands of years.
Just above the travertines lies Hierapolis, once a Roman and Byzantine spa city, which has considerable ruins and a museum. The ruins of the temples, baths and other Greek monuments can be seen at the site. Pamukkale is recognized as a World Heritage Site together with Hierapolis. Access to the terraces is not allowed and visitors are asked to follow the pathway. Due to the new regulations, visitors are only allowed to use small pools.