Petting this mysterious iron monkey supposedly brings good luck.

This gruesome biblical parade celebrates the one day a year that a bit of Jesus' blood turns to liquid.

An early 20th-century sanatorium, long abandoned and now being reclaimed by nature.

The tiny Belgian town's ancient version of Mardi Gras involves eerie wax masks, sticks for warding off evil, and ostrich plume hats.

This charming, hidden guild museum holds some 700 years of crossbow history.

A giant bug impaled on a 75-foot-tall needle.

A collection of weird and wonderful art fills a former houseplant nursery.

Inside this former medieval prison is a collection of objects designed to inflict unbelievable pain and suffering on the human body and mind.

To enter this cluttered-yet-cozy sanctum of Belgian brews, ring the bell and tell the gatekeepers you've come “to taste beer.”

This statue dedicated to the story of a Flemish boy and his dog was relatively obscure in Belgium, but a cult sensation in Japan.

This giant urban staircase was built to keep the city's brave fighting men from getting waylaid in the red light district.

Drink among marionettes at this pub inside a historic puppet theater.

Descend into the tunnels to experience the life of a coal miner.

This bike path traverses the treetops.

The highest point in Belgium is a staircase to nowhere.

The "stairway to heaven" lookout tower was built to resist weather, arson, and the laws of physics.

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

This bike path was sunk below water level for maximum wonder.

When you're a great Russian Tsar, even your vomit gets a statue.

A Museum of Psychiatry in a still-operating mental institution.

A fantastical bed and breakfast with magically unique rooms.

This Greek temple, open only an hour a day, was the site of a war of tastes between an architect and an artist.

A little sculpture with a large wardrobe.

One of the deepest indoor swimming pools in the world.