Gorgeous cave resemble a winter wonderland.

Massive mounds of golden sand look like a desert landscape randomly plopped in an Arctic forest.

A charming Amazigh village carved into a mountaintop.

In the heart of Luxembourg's "little Switzerland" weaves a breathtaking natural sandstone canyon with a mythological past.

A small island with shimmering pink sands, home to loggerhead turtles and rare plants.

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

Tropical paradise strewn with hundreds of World War II wrecks.

Abandoned ships along a deserted beach feel like the set of a post-apocalyptic thriller.

According to legend, this hacienda was abandoned because of a curse.

Once a bustling fishing port, this semi-ghost town is now more than 90 miles away from the shore.

The world's largest ship graveyard is the product of decades of corruption.

The first European statue dedicated to the legendary musician.

The world's largest bioluminescent area was undiscovered by science until 2005.

Unexplained bald patches in the landscape grow and recede over time, as though they are somehow alive.

The most alien-looking place on Earth.

The inhabitants of the world’s largest wetland have learned to navigate its dramatic seasonal changes.

This black shoreline is made up of exploded lava particles.

Famous in both ancient and modern times, the "mountains of the moon" are legendary for their beauty and biodiversity. But they are threatened by the changing climate.

The remains of Abó, Gran Quivera, and Qurai are monuments to the long, complicated history of the Indigenous people of the Southwest.

Siberian whale bones stand as cairns marking location of an ancient butcher yard.

These small, triangular, colorful houses are a staple of Madeira Island.

Perhaps the most spectacular grotto along the Algarve coastline.

Beautifully carved tombstones fill this unmarked graveyard, uniquely situated near the village's famous stone wine cellars.

These natural stone bridges are the largest on the European continent.