These hellish-looking cliffs in the Canadian Arctic have been burning for centuries.

Nature's water park in the Wadi Bani Awf valley is full of pools flanked with cliffs and natural water slides.

A French valley with forests so lush it was nicknamed "the Small Amazonia of the Pyrenees."

This natural crater along the coast of Jersey may take its name from the devil statues who have watched over it.

The tallest sea cliffs on the Southern Hemisphere are a climber's worst nightmare.

These homes carved into the mountains seem to defy the laws of nature.

This abandoned bunker looks out over the Atlantic from its clifftop perch.

Cliffs that hold fossils, including the earliest known reptile, dating back more than 300 million years.