Pravcicka Brana, Czech Republic.
The Pravcicka Brana is located in northwestern Czech Republic and is the largest natural sandstone arch in Europe. During the time when this narrow rock formation was accessible to tourists, the upper part of the arch eroded by 80 cm (32 inches). Since 1982, tourists have not been allowed on the arch.
Derweze Crater, Turkmenistan.
Derweze is a small village where Soviet geologists drilled the land in 1971 for natural gas but their rig collapsed, creating a massive hole. They ignited the gas in order to avoid poisonous gas discharge, hoping it would burn in a few days, however the gas is still burning today. Due to this fact this place was dubbed as “The Door to Hell."
The Twelve Apostles, Australia.
The Twelve Apostles is a collection of magnificent rock stacks off the shore of the Port Campbell National Park in Victoria, Australia. It's still known as the Twelve Apostles, in spite of there are just eight stacks remaining at the present time. The wave erosion has caused them to erode by 2 cm (0.8 inch) per year.
Located in South Florida, the Everglades are a natural region of tropical wetlands that provide natural habitats for numerous fauna and flora species and is the largest remaining subtropical wilderness in the United States. Human expansion, pollution and farming have already destroyed more than half of the unique treasure.