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

One hundred years ago this small house in downtown Zürich became the birthplace of the Dada movement.

Drink wine handed out through a window as part of an age-old tradition.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.

The oldest operating pharmacy in the world features 800-year-old recipes.

Pitié-Salpêtrière was the dumping grounds for women who received the dreaded diagnosis of "hysterical."

The first green space constructed on an elevated viaduct.

The ruins of a Duke's bucolic dream, where camels once roamed alongside "Dutch" windmills and faux-Italian vineyards.

A majestic lion statue guards this Parisian botanical garden, and feeds on an unsettling item.

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

The oldest stone house in Paris was built by its most famous alchemist.

Notorious artist squat renovated into legal studios.

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

The vast, legendary catacombs hold secrets much stranger than stacked bones.

A growing popular hipster market with over 100 local specialties and live music.

Frida Kahlo's childhood home, now a museum of her life and works.

An L.A. traffic island where the faces of locals have been carved into massive granite eggs.

A lonely Gondola stuck on a traffic circle sits in a spot where it once would have floated down the Grand Canal.

A three-story, three-dimensional hobo clown in a tutu welcomes CVS shoppers.

In a city filled with Frank Gehry buildings, one stands out as one of the architect's weirder works.