Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

A 141-foot wave of crashing lumber guards the entrance to the Grand Place in Mons.

Rock-hewn monastery complex with hundreds of cave structures tucked away into the mountainside.

A literally moving statue of stacked metal giants just continually trying (and failing) to find love.

Despite being tiny and rural this Georgian airport looks like a sci-fi boondoggle.

Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.

A silly medieval mural preserved on the side of a Viennese house.

Baroque celebration of the end of the Great Plague of Vienna.

Op-art architecture designed for happiness.

The resting place for anonymous victims of the Danube's dark waters.

This delightful little museum is dedicated to only one thing: pasta.

A beautiful but toxic fountain of mercury.

Lyon's "Wall of the Silk Weavers" is one of the largest murals in Europe.

A colorful piece of contemporary art cheerfully clashes with Lyon's historical architecture.

One of the last umbrella repair shops in Paris upholds the nostalgic art of umbrella making.

One of the greatest maze designer’s greatest mazes.

Sacked by Vikings, blessed by William the Conqueror, dealt a fatal blow during the French Revolution—these ruins have seen it all.

This French ghost town from World War II has been left as a memorial to German atrocities during World War II.

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

Indents in the pavement are all that remain from a grisly death machine in Paris.