Tables of secondhand books fill the inner courtyard of this 17th-century stock exchange.

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

A 16th-century fountain marks the site of a lost medieval cemetery once filled with mass graves.

This demon atop the Notre-Dame de Paris looks utterly bored.

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

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

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

With a history of slaughter, feast, and famine, remnants of the pork industry decorate this area--even its church.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

A daring D-Day assault by U.S. Army Rangers is commemorated atop the high cliffs of this strategic point.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

This enormous "cloth of the conquest" depicts the Norman invasion of England in mind-blowing detail.

A memorial to the nearly 10,000 American soldiers laid to rest on the beaches of Normandy during WWII.

France's high-tech, future-themed amusement park.

A haunting collection of the vanished and disappearing natural world.

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

A gas station and a state sign commemorating the most famous claims of extraterrestrial abduction.

Packed with gear and memorabilia, this museum chronicles the history of skiing and how its rise shaped New England.

Explore this medieval cathedral by trying to spot all the malevolent monsters hiding in its beautifully colored windows.

There has been an astronomical clock on this spot since the 14th century.

The telescope that discovered Neptune.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

Ugly 18th-century dwarf statues living in a perfectly landscaped Austrian garden.

This strange statue features a bust of the famous composer plopped atop a woman's body.