This Belgian palace was long the domain of priests and aristocrats but is now being turned into an art commune.

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

The highest point in Belgium is a staircase to nowhere.

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

An open-air sewer system that was covered piece-by-piece over 300 years.

A maze of crosses marks the jumbled divide between the Netherlands and Belgium.

Brussels' favorite peeing boy has a sister.

A 14th-century fortified keep showcases the masterpieces of an ingenious 20th-century clockmaker.

A little sculpture with a large wardrobe.

Theme park featuring miniature replicas of European monuments.

From Tintin to the Smurfs, Europe's greatest graphic icons are celebrated in a grand Art Noveau gallery.

Climb inside an iron crystal magnified 165 billion times its normal size.

Cozy basement bar sports an inventory of over 2,000 beers.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

This ghost town in Belgium will lose its street art when it ceases to exist.

Part modern art project, part traditional chapel, this see-through church is only substantial from the right angle.

Each spring, a dreamlike carpet of bluebells overtakes the forest floor.

The medieval "dragon" on an Austrian city's coat-of-arms comes to life in a fountain.

This spire on an Austrian mountain is wrapped around a long spiral slide and has the world's tallest wooden observation deck.

Ugly 18th-century dwarf statues living in a perfectly landscaped Austrian garden.

The largest ice cave in the world is thought to be the entrance to hell according to Austrian legend.

This truly palatial work of Communist-era architecture now sits crumbling on a Croatian beach.