This giant sculpture made of trash is a critique of society's wastefulness.

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.

It's always summer at the beach inside this former airship hangar.

A 16th-century horror show built in a lovely Italian garden.

Cat art as far as the eye can see.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

The world's only museum devoted to the wonders of fluorescence.

Famed for its pie, this eatery has a hidden tunnel that allowed Catholics to secretly walk to church during the Reformation.

This 22-floor tower's Skydeck offers panoramic views of Amsterdam.

Theme park featuring miniature replicas of European monuments.

Brussels' favorite peeing boy has a sister.

A little sculpture with a large wardrobe.

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

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

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.

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

A village of art and exotic creations.

A total of 22 tiny bridges cross this canal of the Yvette River, forming a unique trail.

A short distance from the Eiffel Tower is the final resting place of several of the city’s more well-known and interesting characters.

This crumbling, graffiti-covered mansion sits tantalizingly within reach of the proletariat who frequent a public park.

A unique zoological park home to over 30 species of wild cats, both big and small.

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

A fortified palace in the shape of a ship on the Thiou river.