The author of Uncle Tom's Cabin was neighbors with Mark Twain while living in this Connecticut home.

This might just be the TARDIS of bookstores.

Oldest existing church in New York and the inspiration for Washington Irving's "The Legend of Sleepy Hollow."

This staircase in a lush tropical grotto was built by enslaved laborers and renamed to honor Queen Victoria's role in ending slavery in the British Empire.

The patch of land below the memorial was gifted by the British to the United States.

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

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

This pump on the bad side of Victorian London betrayed a horrifying revelation about the water supply.

This one has sailed five times as far as Sir Francis Drake's famous ship.

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

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

Bronze sculpture celebrating the relationship between Churchill and Roosevelt.

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

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

After nearly 60 years, there's still a bear at Paddington Station looking for help.

Mary Kelly was last seen here before she was murdered by Jack the Ripper.

A naturally mummified 2,000-year-old man.

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.

A 2000-year-old Roman amphitheater lies just below Guildhall Yard.

Eighty million natural history specimens call this gargantuan museum home.

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

Hear the quietest sound from across the dome.

Rebuilt remains of a temple to Roman god Mithras.