See massive fossils that are over 200 million years old in northeastern Arizona.

Most-visited and most-photographed slot canyon in the American Southwest.

Rippling sand dunes frozen in the Arizona rock.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

Vast stretch of tide-pools with a unique Moroccan charm.

The ruins of an early-18th-century complex that could once house up to 12,000 horses.

Designed as a labyrinth, this subterranean prison was crafted without bars or doors.

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

A quirky bookstore hidden beneath a sea of whitewashed Greek villas.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

This centuries-old Italian chapel hangs midway down a sheer cliffside.