Pamukkale is considered the Eighth Wonder of the World, and it's easy to see why. In fact, I can't believe I'd never heard of this amazing place before. Pamukkale, meaning 'cotton castle' in Turkish, is a surreal white fluffy rock formation on a hillside near Denizli in southwestern Turkey. The incredible terraces of crescent-shaped pools, fringed with stalactites, were created by natural springs which cascaded thick layers of calcium bicarbonate down the hillside, slowly turning it into a frozen waterfall.
Hierapolis was quite a fashionable spa in the 2nd century BC), believing that the water from the hot springs has healing effects on the skin and eyes, and curing properties for asthma and rheumatism.
World Heritage Site.
If Turkey isn't in your travel plans, you can check out very similar rock formations at Mammoth Hot Springs in Yellowstone National Park, or at Huanglong in Sichuan, China. RM