A memorial to the only dog ever officially enlisted in the Royal Navy.

This museum collects over a century of automobile history including the iconic car from The Muppet Movie.

A turn-of-the-century architectural marvel built on healing mineral springs and salt licks.

Once adorning a New York skyscraper, these reclaimed ruins now haunt an Indiana park.

Its collection includes a broad array of social, geographic, graphic design, and political history.

The medieval woodcut-style artwork chronicles life in medieval London.

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

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

The majority of the museum's large collection is held in a storage space open to the public a few times a year.

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

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

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

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.

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

This legendary stone is of unknown origin, and throughout history has been a literal touchstone for British leaders.

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

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

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

A student driver's nightmare.

An unusual round church in London with a Templar past.

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

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

Haven for Cape Fur Seals, until the Ring of Death of jumping Great White Sharks arrives.