A clear blue swimming hole with hidden caves, still unexplored.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

One man has carved a number of natural New Mexico caves into psychedelic sandstone temples.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

Some of the Old West's most notorious outlaws frequented this mining town.

The final resting place of the living embodiment of the famous Forest Service symbol.

Home of the International Space Hall of Fame.

Home to New Mexico's longest bar, this watering hole also has a mining museum and a haunted history.

This volcano rises like a giant anthill from the plains below, with a road spiraling up to the rim.

Gladiators once walked this ancient, subterranean passage.

This slumbering beast honors the Bavarian soldiers who died in Greece during a 19th-century typhoid outbreak.

The nuns here cultivate silk to weave some of the finest scarves in the world.

The abandoned summer estate of the former Greek Royal Family.

The rocky remains of an ancient Greek forest.

This 13th-century monastery chiseled into the side of a mountain is equipped with a bridge that can be lifted to protect against raids.

A grotesque collection of wax limbs depicting the symptoms of venereal disease.

Cave on extinct volcano, once home to famous mathematician Pythagoras.

Replicas of Apollo's leonine stone guard cats still line a sacred row in Greece.

Cretean quarry suggests real-life site for ancient Greek myth of the man-eating Minotaur in his labyrinth.

This remarkable cave was discovered after a shepherd watched bees enter and exit through a small fissure.

According to myth, Zeus himself was hidden in this cave to escape being eaten by his dad.

Giant marble phalluses on the sacred island of antiquity.

A Bronze age settlement on the Greek island of Santorini might have been the inspiration for Plato's Atlantis.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.