Ming Dynasty necropolis raided during the Cultural Revolution.

Why walk on this historical site when you can zoom down instead?

The most famous location in China was home to whole dynasties worth of imperial rulers.

The "Prussian Versailles" that is as glorious today as when it was built.

For patriotic Russians, this memorial honoring the Soviet soldiers who died liberating Berlin in 1945 is the most sacred location outside of Russia.

This platform is now a memorial dedicated to those who were deported during the Holocaust.

One of downtown Berlin's last reminders of its Communist past.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

The largest of London's subterranean rivers and once a mad, bad center of London life.

A commemorative plaque at the door pays tribute to an "American Patriot" known for his betrayal.

The Tudor-style cottage in the middle of the square is not quite what it seems.

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

This inn of the court provides a fascinating window into London’s legal and architectural history.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

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

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

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

It's believed emperor Hadrian himself funded this once architectural wonder.

Home to Alan Turing, the cracking of the Enigma code, and Captain Ridley's shooting party.

A remarkable medieval structure born from a 14th-century disaster.

The tomb of Increase Mather and his son Cotton, influential colonial ministers obsessed with the occult.

This landmark cemetery in Boston was created more than 300 years ago.

The site of Paul Revere's historic two lantern warning.