Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

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.

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

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

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

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the first ‘Harry Potter’ film.

A public urinal so pretty, it was declared a national monument.

Museum preserving torture methods from the past.

Lady Liberty's first beacon of enlightenment is now displayed in a museum near the statue.

Leaf through over 30,000 artists' sketchbooks in what may be the world's largest collection of doodles

The very first subway station in New York City is beautiful, decked out in chandeliers, and ... abandoned?

Two stone columns flank the grand Venice square, but there were supposed to be three.

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

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

Go inside to really appreciate this 500-year-old technological masterpiece.

Legend has it that this bronze orb, which sat atop an ancient Egyptian obelisk, once held the ashes of Julius Caesar.

A colossal aqueduct from the second century B.C., deeply hidden in a gorge on the outskirts of Rome.

This one-of-a-kind Roman arch is not actually dedicated to the god Janus.

An 18th century fountain and two columns are all that remains of Rome's forgotten river harbor.

This small, ancient Roman temple was once a church dedicated to the patron saint of penitents.

The ruins of the largest gladiatorial school in Rome are largely hidden under modern streets.