The compass on its front was a handy tool for 17th-century merchants who needed to know the direction of the wind.

A traditional American farmhouse plopped in the middle of a Piccadilly courtyard.

This intriguing Bronze Age artifact spent centuries hidden within a Welsh faerie hill.

This bewitching Babylonian goddess haunts a hallway of the British Museum.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

Charles Babbage's proto-computer, painstakingly brought to life.

A naturally mummified 2,000-year-old man.

Eighty million natural history specimens call this gargantuan museum home.

Look closely and you’ll notice that the color changes a third of the way up the tower.

While most wind tunnels test scale models, the "Cave of Winds" was large enough for actual airplanes.

A little marble compass above George Washington's (empty) tomb in the Capitol marks where D.C.'s four quadrants intersect.

Where artisans use centuries-old techniques to build traditional Arabian ships.

This bazaar is one of the oldest in the Arabian world.

This spectacular mosque houses the second-largest chandelier in the world.

America's Most Wanted's set resides in this tribute to the history of crime and punishment.

The 28,000-year-old specimen is remarkably intact.

Daredevil repair workers can worm their way out the access hatch, loop ropes over the apex and rappel down the monument.

The "lovely red Vega" of the legendary record-settling pilot.

This once-derelict building is now one of the most beautiful bookstores in the world.

The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.

Local legend says Isaac Newton built this footbridge without any screws, bolts, or nails.

The Cambridge pub where Francis Crick announced that he and James Watson had discovered the DNA double-helix.