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

Five candy-colored villages on the Italian Riviera.

This red lake 4,000 meters above sea level is home to rare flamingos.

Largest site of dinosaur footprints ever found includes more than 5,000 tracks.

Mountain of unimaginable riches that bankrolled the Spanish Empire, complete with its own underworld god.

On the outskirts of a desert trading village high on the Andean plain, steel giants have been destroyed by salt winds.

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

A memorial to the victims of Argentina's "Dirty War."

This stunning mass of ice spans 121 square miles and is still growing.

Death rituals and sacrifice inside a Peruvian megalith.

If you’ve ever seen a picture of Machu Picchu, then you’ve seen a picture of Huayna Picchu—you just didn’t realize it.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

Pivotal home of Nobel Prize winner Pablo Neruda.

What was once a unique system of urban elevators is turning into a mechanical ruin.

An icy lake tucked among jaw-dropping alpine panoramas.

Massive puppet-automaton machines created by French artist collective Machines de l’Ile.

Site of a classic 19th-century physics experiment to prove the earth is rotating.

A mud brick kasbah with a history of lavishness and traitorship.

An eerie former warehouse turned cistern turned movie set.

Traditional 11th-century outdoor tannery.

An awe-inspiring mosque in Morocco with one of the tallest minarets in the world.

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.

A fortified city, home to a remaining population of five families