In this historic region, homes and churches are carved into ancient volcanic rock formations.

Monasteries on rock pillars, once accessible only by frayed ropes.

This volcanic cave lake is essentially hard proof that Iceland is the most magical place on Earth.

A serpentine highway twists and turns over the treacherous Norwegian Sea.

Ruins of a German Castle on top of a towering stone pillar.

A hospital closed seemingly in the middle of operations, leaving behind fodder for horror films and ghost hunters.

A swing to dangle you off the very edge.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

The rocks in this arid basin leave trails of movement behind them.

A tribute to Ponce de Leon's supposed quest for eternal youth.

Quite simply the largest tree in the world (by volume).

A massive sea stack famous for its appearance in The Goonies.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

The world's longest known cave system.

A beautiful geyser under environmental threat.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

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

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

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

A seven-century-old jail tells a not-so-pleasant history of crime and punishment.

The giant scales in this museum can still tell if someone is one of the devil's brides just by weight.

For the holidays, the tallest broadcasting tower in the Netherlands turns into one of the world's tallest Christmas trees.