Visitors can explore the role of mysticism throughout the ages inside this interactive museum of magic.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

Beneath the impressive baroque cathedral that rises from the center of Berlin lies the largest collection of Prussian royals in the world.

Hear the quietest sound from across the dome.

A historic London pub with prison cells in the cellar and a "spy room" on the second floor.

This 1920s Dutch barge is now a floating bookstore.

This luxury shopping lane has been protected by its own tiny police force for over a century.

According to legend, this tomb holds the secrets to time travel.

Artists and musicians now rule over this former rail station.

This intricately carved and hilariously huge bed was such a famous symbol both Shakespeare and Byron used it in their writing.

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

The remains of an ancient Roman teenager are memorialized at the base of a modern London landmark.

A hidden treasure in London with a rich medieval history, and the resting place of many luminaries.

The final resting place to 300 Victorian-era pets hides inside the city park.

A Roman spa buried deep beneath the City of London.

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

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

The curios of pharmacist and collector Henry Wellcome.

This landmark church concealed a crypt packed with bones that was discovered thanks to the London Blitz.

Buried for centuries, this hidden cellar is all that remains of London's medieval Whitefriars Monastery.

A bronze bust commemorates the heroism of the secret agents who led covert operations against the Nazis.

Traveling collection of amazing automata.

A tongue-in-cheek arcade where the games are based on everyday life.

One of the few remaining examples of 19th-century London’s attempt to clean up its reputation.