The bluer than blue waters in these natural Israeli caves are reached via the world's steepest cable car.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

This electric green sulphur lake in New Zealand looks like a cartoonish radioactive dump site.

According to the locals, the sands of this secluded Norway beach are infused with gemstone particles.

A miraculous natural phenomenon known as "the spring that breathes."

Naturally formed white marble arch housed in an abandoned marble quarry from the 1800s.

Legend says that these tall basalt pillars are the petrified wives of a trickster god.

As the Dead Sea continues to deplete, massive sinkholes open along its banks.

The world's highest and most dangerous infinity pool lies at the precipice of Victoria Falls.

This gracefully curving formation looks like a massive wave that was suddenly turned to stone.

The caldera of this mini-volcano has been turned into a naturally heated mud bath.

The unique ecosystem atop an Australian mountain is home to some colorful inhabitants.

This dramatic sea spire is home to the world's rarest insect and is part of the lost continent of Zealandia.

A unique form of erosion created an uncanny landscape of boulders perched atop slender columns of clay.

Creek water that starts here has a 50/50 chance of ending up in the Atlantic or the Pacific.

This heart-shaped island looks substantially less lovely after a recent bulldozing project.

This scalding hot river was thought to be a myth until one geoscientist made it his quest to study the mystical waters.

It would take 35 firetrucks to fill this enormous glacial pothole.

This striking landscape in northern Vietnam contains both geological and archaeological wonders.

A remote candy-striped mountain in the Peruvian Andes straight out of the pages of Dr. Seuss.

Dramatic sea stacks adorn the coast of this small village on the Adriatic coast.

A winding, blood-red tunnel of hardened lava navigable by foot.

Europe's largest natural bridge has a 19th century royal chateau built into its side.

The world's largest and most outstanding marl lake regularly changes color.