Pamukkale is one of the extraordinary natural wonders of Turkey. The great attraction is the white immensity of the cliff with sculptured basins full of water and congealed waterfalls; they seem done of snow, cloud, cotton. The scientific explanation is the hot thermal places that lie under the mount provoke the calcium carbonate spill, that makes the forms as solid as travertino marble. One can bath there; the Turks call this place PAMUKKALE, which means "Castle of Cotton". It is a protecting landscape that fascinates, as the action of the mineral waters that contains calcium oxides left fantastic marks in the structures. The resultant effect is spectacular: the waters spill on a series of steps, forming solid cascades and pools. As much the cascades of calcium carbonate as the water change color in accordance with changes of the solar light that illuminates them, and the effect is surprising. At times white, others blue, or green or other colors. The spectacle is flaring. The continuous dynamics of the erosion and the transformation of the natural landscape result in an unusual environment. PAMUKKALE is one of the most unique phenomena in nature.