The Travertine Terraces in Pamukkale are one of the most spectacular natural wonders we ever have seen from various mineral springs in a vast white cliff side, about 200 m overlooking the plain, calcite-laden waters have dripped down over a series of terraced levels and created a fairyland of bizarre solidified cascades and shell-shaped basins. It looks like creations from snow or like balls from cotton, which gave the scenery the Turkish name Pamukkale (cotton castle): “pamuk” for cotton and “kale” for castle. Moreover the water in the basins is changing its color according to how the light enters.