These medieval funerary monuments are now home to a colony of critically endangered vultures.

The "Bridge Over the Atlantic" lets you cross the waterway in mere seconds.

The hidden ruins of an old hydroelectric plant reclaimed by nature.

Many people don't realize there’s a lot going on in—and below—the world’s tallest triumphal arch.

Wander among the abandoned ruins of this once-powerful medieval town.

Traveling this mountain pass reveals quaint stone buildings, stunning Irish scenery, and a bridge said to grant wishes.

This hidden bridge is where local children leave gifts and messages for the island's fay folk.

This famed Silk Road oasis was one of the largest cities in the world before it was destroyed by a Mongol horde.

The trunks of 3,000 year-old trees lurk beneath the surface of this crystal clear lake in Oregon.

The eerie remnants of an ancient forest were hidden under the sand for centuries.

The 3,600-year-old archeological sensation is considered to be the oldest representation of the cosmos.

Watch the seas clash at the place where according to Maori tradition, the spirits depart for their journey to the afterlife.

A strange anthropomorphic stele with a mysterious inscription that has never been deciphered.

On this wooded path, a stained-glass window creates a spellbinding forest cathedral.

Some call this eerie forest of crooked trees the "Bermuda Triangle of Romania."

Along the most northwestern point in Africa is an ancient cave surrounded by legends.

Spend the night in this formerly abandoned traditional Scottish village.

This lonely tomb is all that remains of a once-bustling ancient trade hub visited by Marco Polo.

A spectacular hidden beach in Ireland has the dark, disturbing nickname of "Murder Hole Beach."

The lighthouse central to the 1980s horror classic "The Fog" is, in fact, located in one of the foggiest areas of the Pacific Coast.

Just saying the name of this town out loud is said to bring bad luck.

In this roadside "community for the small," abandoned toys gain new lives.

This once-derelict building is now one of the most beautiful bookstores in the world.

This isolated Japanese mountain village untouched by time showcases unique and stunning traditional architecture.