Deep in the Thar desert, a temple crawling with thousands of holy rats.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

The glowing blue Nymphaeum of Emperor Tiberius.

A spherical "micro-nation" in the heart of Vienna.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

A seemingly endless landscape of pure salt stretches far across Bolivia.

This "floating island" plateau sits 7,671 feet above the forest floor.

The small cliffside monastery known as the Tiger's Nest is said to be the meditation site of an eighth-century Buddhist master.

A set of ancient drawings in the desert of Peru that are so massive, many of them can only be fully seen from the sky.

Death road of Bolivia.

A battle between nature and architecture in the Cambodian jungle.

Every equinox this Maya pyramid puts on a spooky ancient light show.

An explosion of natural color known as "the river that ran away from paradise."

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Breathtakingly blue walls shimmer inside the "Glacier Behind the Town."