An atmospheric, medieval-themed book store hides in a 13th-century underground space.

An unusual sand beach in the middle of a forest.

A village of art and exotic creations.

Jean Tinguely's bizarre monster sculpture is hidden deep in a forest.

This professional clown's home is an outsider art wonderland.

The somewhat misnamed 'Garden of Shells' lovingly built from found objects.

To the famous surrealist artist, liberty required two torches held high.

The Church of the Annunciation was carved into the face of a cliff, just like the rest of the town of Haute-Isle.

This modern French ossuary contains the jumbled bones of 130,000 WWI soldiers.

This striking fort on the Maginot Line looks just as it did after being destroyed in the Fall of France.

The remains of 40,000 humans, meticulously stacked in a tiny churchyard shed.

Once the local rulers had gone these enchanting ruins housed common folk in an almost real life fairy tale.

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

Two standing giants remain as a tribute to Luxembourg's metallurgical past.

Largest illuminated advertisement sign in the world.

Rare wooden escalators lead deep down into an otherwise staggeringly monotonous tiled tunnel.

A small island less than half a mile from Venice is a forbidden island with a dark and twisted past.

Hanging within this medieval church are the bones of a beast allegedly slain by a fourth-century saint.

Those who own or stay at this 500-year-old, allegedly cursed house often meet terrible fates.

You can spot this teeny tiny stained-glass window from the Bonifacius bridge.

This former Masonic lodge has been transformed into part museum, part bar, all awesome.

You would never come across this tiny green oasis if you didn't know it existed.

Potato-peeling mannequins, Inca art, and a dangling tuber mobile help trace the history of fries at this Belgian museum.

The compass on its front was a handy tool for 17th-century merchants who needed to know the direction of the wind.