Dress up like a miner and take a slide into the disco-lit depths of this once foundational salt mine.

The footprint of a frustrated devil in Munich's Cathedral.

Golden cobblestones remember a time when this small alley was used to avoid having to give a Nazi salute.

Among the ostentatious rococo ornamentation of this church, an image of death cuts the life-thread.

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

The prototype for all Nazi concentration camps.

A six-ton wedding present for the King of the Scots.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

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

Follow the original medieval paths that wind through this intriguing section of the city.

The most loyal of little dogs, or a Victorian era publicity stunt?

Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

The final resting place of soldiers' loyal canine companions.

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

A church that bred legends, and served as an inspiration for the Da Vinci Code.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

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

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

Famously misunderstood wonder of the ancient world

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

This iconic fortress was once the crown jewel of Haiti's national defense.

The fairy tale castle of the "fairy-tale king."