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

At Monet's beloved home you can still see the Japanese bridge, waterlilies, and weeping willows that were the subjects of some of his most iconic paintings.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

Eighty million natural history specimens call this gargantuan museum home.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

An imperial fortress city that incorporated cultural elements from the entire Mughal empire, only to be abandoned the year it was finished.

Dedicated to the life of a brave woman soldier.

This long-distance walking route follows the Prime Meridian line as it passes through England.

A series of waterfalls so massive they straddle the border of Argentina and Brazil.

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

An effigy of a trapped paratrooper dangles from a Normandy church to commemorate one remarkable D-Day event.

These unique markers designate the route American forces took during the Liberation of France.

The Lone Star plaque hangs in a bombed-out bunker in Normandy to honor a Texan colonel's heroic actions on D-Day.

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

This 17th-century Portuguese fort now houses a nautical museum.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

The very first subway station in New York City is beautiful, decked out in chandeliers, and ... abandoned?

This titanic oil company sign is a reminder of the Americana boom of the 1970s and also its commoditization.