In the best of all possible worlds, everyone will get a chance to see this statue in which Voltaire's heart is interred.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

Scattered throughout London are ancient remnants of the city's former bounding wall.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

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

The celebrated eyesore created by starry-eyed sweethearts.

A favorite Paris bar for U.S. expats, including Gershwin, Hemingway, and James Bond.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

135 bronze medallions mark a French meridian line which once rivaled the hotshot Greenwich timeline.

France's most famous cemetery, with some of its most curious tombs.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

A quaint medieval millhouse hovers surprisingly above the waters of the Seine.

How did a French journalist’s grave become the sexiest statue in the cemetery?

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.

His "Lionheart" is entombed separately from the rest of his body.

An ancient ossuary in Rouen.

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