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

A UFO-shaped event building originally intended to be a science museum showcasing the future.

Ancient man-made caves underneath small town Belgium.

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

Scale model of St. Peter's Cathedral (Rome) in the middle of a small Dutch town.

One of the deepest indoor swimming pools in the world.

A little sculpture with a large wardrobe.

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

Brussels' favorite peeing boy has a sister.

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

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

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

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

A huge old mansion full of thousands of toys, each there to be used and played with.

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

Lavish royal estate punctuated with heated greenhouses.

Theme park featuring miniature replicas of European monuments.

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

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

Noirish green neon marks the location of one of the oldest private detective agencies in France.

Museum on French naval history, with magnificent figureheads, a historic diving suit, and a boat used by Napoleon.

A popular shrine where the Blessed Virgin allegedly appeared in 1830, displaying a holy armchair and two incorruptible remains of Lady Saints.

A subterranean shelter remains intact under a busy Paris railway station.

The former home of France's controversial pop maestro is almost completely covered in ever-changing tributes and graffiti.