During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

Iceland's tribute to its thankless civil servants.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

For over 30 years the walls of this Harlem schoolyard have been a gallery of street art by "Kings and better."

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

A terrific purveyor of natural history objects and curios.

A storybook European village in Berkeley.

Travelers exchange letters with woodland creatures at this mini post office.

Paris' linguistic guide to the international language of, yes, love.

A modern-day Lascaux cave underneath Paris.

An overlooked marble is the only surviving in-place 18th century example of the measurement that changed how we define distance.

A surrealist timepiece by the artist of melting clocks.

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the century.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

The risqué mixed-media sculptures are supposedly a metaphor for Czech politics.

A Jenga-style cylindrical tower of books that appears to go on forever.

What looks like a suicide in progress is actually a statue of Sigmund Freud.

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

Golden cobblestones remember a time when this small alley was used to avoid having to give a Nazi salute.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

The largest permanent Monopoly board makes one of the longest games even bigger.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

An artsy hidden staircase leads to breathtaking views of San Francisco.