A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

This massive library holds what was once the largest book collection in the world.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

France's most famous cemetery, with some of its most curious tombs.

This too-low North Carolina railroad trestle is still a notorious big rig executioner.

A bizarre roadside attraction and the first instance of miniature golf in the world.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

A whimsical bridge uses saxophones to pay tribute to two great men and the European Union.

The patron of this extravagant Art Nouveau confection insisted that nothing less than a boat should project from its facade.

A fantastical bed and breakfast with magically unique rooms.

Because sometimes you need to make a batch of frites even when the stores are all closed.

An undulating wicker beast looms peacefully atop a sand dune in Belgium.

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

A little sculpture with a large wardrobe.

One of the deepest indoor swimming pools in the world.

Theme park featuring miniature replicas of European monuments.

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

Hiding the longest subterranean river known in the world.

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

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

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

This 11th-century castle sits so low you can't see it behind the surrounding buildings.