Hierapolis; which has the biggest Nekropol with 1200 gravestones in Anatolia. The sacred pool also is one of the highlights of the site. There shallow thermal waters ripple over a wonderful scattering of ancient roman ruins that lie beneath.Deriving from springs in a cliff almost 200 m high overlooking the plain, calcite-laden waters have created at Pamukkale an unreal landscape, made up of mineral forests, petrified waterfalls and a series of terraced basins. At the end of the 2nd century B.C. the dynasty of the Attalids, the kings of Pergamon, established the thermal spa of Hierapolis. The ruins of the baths, temples and other Greek monuments can be seen at the site.Pamukkale; which is the center of natural thermal spring waters with healing properties. Due to the chemical properties in the water, pure white colored travertines and stepped water terraces have been created on the mountain slope. It is for its resemblence to cotton piles that it is called ‘Cotton Castle’ in Turkish.