Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

The only diamond mine in the world where you can keep what you find.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Horrifically creative torture devices and shame punishments line the walls of this chilling museum.

Every hour the doors open to reenact the legend of the heroic mayor who saved his town by drinking a gallon of wine.

The commemorative stone column conceals a secret laboratory.

A unique tribute to the millions of animals who served and died for the British military.

The ritual has been performed uninterrupted for nearly 700 years.

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

Never actually a tree at all, this spot was the site of London's public hangings for nearly 600 years.

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

Where condemned pirates met their grisly end at the gallows on the River Thames.

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

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

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

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

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

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

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

The prototype for all Nazi concentration camps.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

A museum dedicated to a Cold War era sausage.

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

A former mental hospital founded in the 1930s by a eugenicist who advocated for the forced sterilization of patients.