The tallest waterfall in the Netherlands is a lovely, stepped feature that is only 50 feet tall.

Housing the groundbreaking maps and globes of Gerard Mercator.

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

Petting this mysterious iron monkey supposedly brings good luck.

Theme park featuring miniature replicas of European monuments.

One of the deepest indoor swimming pools in the world.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

Lavish royal estate punctuated with heated greenhouses.

This modern arts center is built around a gem of late-Baroque architecture.

Meet the bronze beloved pet to a family of famous peeing statues.

A little sculpture with a large wardrobe.

The Devil’s own choice when he needs a drink in Brussels.

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

The vast chamber inside this abandoned cooling tower looks like something out of a sci-fi dystopia.

This unique Renaissance castle was turned into a home for Nazi occultism.

A towering baroque basilica jutting out of the French countryside.

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

This collection of solar timekeepers includes the world's first digital sundial.

Most powerful transmitter in Germany only broadcasts in the French language.

A marble Lucifer hides behind the pulpit of this Gothic cathedral.

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

A Belgian self-built tower inspired by the Bible and ancient civilizations.

No need to strap in for a "ride" on this walkable roller coaster.

This futuristic German television spire is actually the world's largest digital clock.