This noble mash-up in eastern Luxembourg is part Medieval, part Renaissance, all castle.

This mysterious, medieval cathedral remains unbuilt but fiercely protected.

The narrow passages will challenge even the bravest driver.

This remote island village was in danger of depopulating completely until a tunnel was built to connect it to the rest of the world .

This natural Icelandic fissure allows divers to swim right between two volatile tectonic plates.

Medicinal spa created with the discharge from a geothermal energy plant.

Tucked in the back of a flower shop, its collection details the fascinating history of the Netherlands's iconic symbol.

The bones of two medieval royal lions were discovered at the historic fortress.

These wire animal sculptures commemorate the exotic inhabitants that once called the Tower of London home.

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

A rugged lava field dotted with molds of the ancient pines that were growing when the volcano erupted.

While it is not equipped to peer into outer space this observatory looks like it was built on the moon.

Despite a legend that says this highest peak in Oregon was climbed in high heels scores of people have died on its slopes.

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

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

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

On the Oregon coast there is a natural hole that seems to be draining the sea.

The park preserves a single, rare species of carnivorous plant that spells doom for unsuspecting insects.

This unassuming cheese empire in rural Oregon churns out more than 150,000 pounds of cheese each day.