A gothic palace of endless stalagmites and pseudoscorpions waits within one of the world's most beautiful caves.

The U.S. Air Force has an anti-satellite laser weapon.

These aggressively sustainable art homes look like something out of 1970's science fiction.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

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

This quirky hot springs town known to locals as "T or C" was named after a radio show.

The old Route 66 town straddling Texas and New Mexico died along with the Main Street of America.

A futuristic temple of light uses prisms and rainbows to create an atmosphere of peace.

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

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

This unique sanctuary invites you to interact with the beautiful birds.

Behind this beachfront shop lies a spectacular, colorful sea cave with an equally colorful past.

Lucha Libre (Mexican Wrestling) themed taco shop.

An inconspicuous footbridge beloved by San Diego locals.

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

Crushed coral and crystals give the sand its signature coloration.

Walk through a fairytale in Tuscany.

Five candy-colored villages on the Italian Riviera.

The oldest operating pharmacy in the world features 800-year-old recipes.

The glowing blue Nymphaeum of Emperor Tiberius.

Geothermal waterfalls in Tuscany.

Renaissance villa and gardens complete with a tormented colossus.

Stalactites and stalagmites in a beautifully lit cave.

Rippling sand dunes frozen in the Arizona rock.