It's good luck to be mocked by this monkey.

A symbol for the opposition to nuclear power around the world.

This unacceptably tall building was the real reason for Washington, D.C.'s skyscraper ban.

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

A statue of the second-tallest Dutchman in history.

This golfball sized platinum iridium cylinder is the official starting point for all national weight calibrations

This eclectic, mosaic-clad home includes a bamboo ping-pong loft and a "Whispermaphones" intercom.

A bust of the first president welcomes visitors to the only town in America called George, Washington.

This Manchester laundromat is hiding something.

Joe Cocker's 1988 concert at this site in East Germany marked a changing sea tide that would eventually lead to reunification.

The first skyscraper to include a Ferris wheel built into the facade.

This 16-foot, 6-ton statue in the singer's hometown doesn't actually look like her.

The illuminating collection of L.A. street lights is run by the city and only opens one day per month.

A spitting ode to a German serial killer.

Rock carving created 1,300 years ago 75 feet off the ground.

A gigantic statue of a Russian soldier watches over the ancient city of Plovdiv, a prominent reminder of the Soviet period in Bulgaria.

"Unity, Creativity, Beauty."

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

Bridge that died in war and was resurected.

Tracking the 1,500-year history of Korea's star cabbage.

The haunting ruins of a military fortress turned astronomical observatory sit on a Sarajevo mountaintop.

A 6th-century stone lies at the site of the mythical battle waged between King Arthur and his nemesis Mordred.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

Maine’s only official memorial to the Underground Railroad.