The tomb of one of the greatest travelers in history.

Writers such as Paul Bowles, William Burroughs, and Samuel Beckett frequented this Tangier bookstore.

Exploring the wilder, more passionate sibling of Erg Chebbi feels like discovering a secret sun-kissed planet from another galaxy.

God's Saharan sandbox of wrath.

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

Thousands of narrow alleyways in an ancient medieval city make up what's believed to be the world's largest car-free urban zone.

The other side is actually green.

One of the most spectacular canyons in the world.

Founded as a refugee camp, now a popular tourist spot.

Morocco's Argania trees are infested with nut-hungry goats.

Take a step into the Cretaceous Period with these preserved dinosaur tracks.

Just outside Lesotho's capital city, a rock formation takes the shape of a powerful predator.

Climb atop one of the world's longest and heaviest trains for an unbelievable journey across the Sahara Desert.

This record setting conveyor belt system can even be seen from space.

Park in the Canary Islands renowned for white dunes that contrast with the turquoise waters of the Atlantic.

Traditional 11th-century outdoor tannery.

A sinkhole and now a swimming hole, too, full of dazzling turquoise water.

A unique configuration of blown glass can be found inside this hotel lobby.

Raging waters have created a strange geological site that looks like something off of a progressive rock album cover.

The walls of this sandstone outcropping are covered with 2,000-year-old artwork.

Brace yourself for the slowest, scariest, most spectacular drive, down the Drakensberg Escarpment.

This granite mountain is the largest rock in Africa and the second-largest monolith in the world.

Natural arch offers panoramic views of Yangshuo's karst hills.

Meant to be a lavish presidential home, the palace became a symbol of the fall of South Vietnam.