This crack in France's seaside cliffs once hid a sinister secret.

The opulent home that inspired Tintin's Marlinspike Hall and the adventures within.

A beautiful and classically designed villa, with an hourly infestation of monsters.

France's high-tech, future-themed amusement park.

The vibrant buildings in the “capital of the comic strip” celebrate the art form that made it famous.

A museum dedicated to the Spanish occult in a town that was terrorized by the Inquisition.

This Navarrese cave's history of witchcraft and pagan ritual is not just embraced, but recreated each year.

Bordered by forest on three sides and the ocean on the other, the Great Dune of Pilat is the highest sand dune in Europe.

This Bordeaux parking garage has 712 indoor spaces, and one outdoor.

Fighting the British and making game shows for over 150 years.

A castle-like sea fort from the 17th century is now a museum to oyster farming.

The remains of the great moral philosopher reside in a university in London.

An eccentric Victorian aristocrat's enormous collection of medieval armor and weapons from around the world.

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

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.