Pamukkale is a natural site in Denizli Province in southwestern Turkey. An amazing display of natural hot water pools.
The area is famous for its hot springs and enormous white terraces of travertine, which is a carbonate mineral left by the flowing water. It is located in Turkey's Inner Aegean region, in the River Menderes valley, which has a temperate climate for most of the year.
Fly Geyser, also known as Fly Ranch Geyser is a small geothermal geyser located on private land in Washoe County, Nevada approximately 20 miles (32 km) north of Gerlach, near the edge of Fly Reservoir in the Hualapai Geothermal Flats.
Skaftafell is a extremely popular location for ice caving enthusiasts. Skaftafell National Park is a gorgeous, lush mountain region located on the southern edge of the Vatnajökull glacier, situated between Kirkjubæjarklaustur and Höfn in the south of Iceland.
Postojna Cave is a 24,340 m long karst cave system near Postojna, southwestern Slovenia. It is the second-longest cave system in the country as well as one of its top tourism sites. The caves were created by the Pivka River.