An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

The Grand Canyon of Texas.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

Steep canyon walls hide a forested oasis in the West Texas desert.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

A fantastic castle rumored to be the birthplace of King Arthur.

The hallucinogenic center of the ancient world.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

Resting place of Hollywood's immortals is also site of summer film screenings.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

France's most famous cemetery, with some of its most curious tombs.

Northern Ireland's Brobdingnagian stepping stones.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

The first declared National Monument in the United States.

Oddly shaped rock formation, misassociated with a nearby utopian community.

The remains of a World War II munitions factory still haunt the fields of this Twin Cities suburb.

Get up close to emus and ostriches, or buy their tasty meat.

A rare chance to get up close and personal with a 13-mile ribbon of ice near downtown Juneau.

Mountain where Jesus was first tempted by the Devil.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Gaze upon chocolate sculptures depicting everything from chariot races to Gaudí's famous church at this shrine to sweets.

A hugely vast Irish landscape of barren rock that stretches for miles.