Pamukkale, or "cotton castle" in Turkish, is an unreal little village that has some of the most spectacular turquoise water terraces you will ever lay eyes on. For thousands of years, people have come here to bath in the hot springs. There are 17 of them in all that range in temperature from 35 °C (95 °F) to 100 °C (212 °F). What makes this site so breathtaking, however, is how the pools look against the white limestone mountains. The terraces are made of travertine, a form of limestone deposited by the thermal waters.