Venice's island of the dead.

Hanging within this medieval church are the bones of a beast allegedly slain by a fourth-century saint.

Thousand-year-old Viking runes adorn an ancient Greek lion at the entrance to the Venetian Arsenal.

The fountain marks the area where hundreds of accused witches were burned at the stake.

Near the former site of numerous witch burnings, this lavish Edinburgh mainstay pays homage to Scotland's brutal history.

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

Protecting the dead from opportunistic body snatchers.

This Scottish graveyard is the final resting place of the man who inspired the character Ebenezer Scrooge.

This 16th-century house tells the city's history through old artifacts and quirky tales.

This extinct volcano rises above Edinburgh and is special for its panoramic views over the city.

Seat of the Duke and Duchess of Devonshire for centuries.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

This hidden green space is the city's second largest conservatory.

A quiet memorial to those who died saving others in the heart of the City of London.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

A cluttered and astounding collection of antiquities and curiosities.

Children's hospital in London that operates on royalties received from Peter Pan, which J.M. Barrie signed over in 1929.

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.

This sculpture encompasses the emotion of rail travel.

The library houses an incredible collection of some of the world's most impressive books and manuscripts.

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

The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.

Pop culture has helped to keep this iconic British building from being destroyed.