Pamukkale, which means "cotton castle" in Turkish, is a geological wonder in southwestern Turkey. In the second century B.C.E., the Hellenistic rulers of Pegamon built a spa at the hot springs located in this area. The site, dubbed Hieropolis by the Greeks and Pamukkale by the Turks, has been a tourist attraction ever since. Calcium carbonate deposits have created fascinating shapes and forms, as you can see at the link.
Link via The Presurfer | Photo by Flickr user nodomain.cc used under Creative Commons license