Pamukkale Hot Springs, Turkey
Over millions of years, the hotsprings in Pamukkale have transformed the landscape. Although it may look like these terraces are made of ice and snow, Turkey has bikini weather all year round. The ground is just coated in white limestone.
Sadly, the mining company that owns the caves could no longer afford to keep the massive pumps going to clear the chamber. I believe the pumps were shut down a few years ago and the cavern is refilled with water. The crystals are growing once again, but no one will ever see it.