Pamukkale (Cotton Castle): A magical and spectacular natural site unique in the world situated by the ruins of sacred Hierapolis ancient city; Pamukkale is a fairyland of dazzling white petrified castles. Calcium rich thermal spring waters at a temperature of 35 C running of the plateau’s edge for millions of years, have created the fantastic formation of stalactites, cataracts and basins. Relax in the hot springs that have been used since Roman times for their therapeutic powers or swim in the modern pools filled with warm, soothing thermal waters.