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.

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

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

Ship-sized kinetic sculptural fantasy.

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

Black cat statues guard this temple-like Egyptian revival factory.

An incarceration museum on the spot of possibly the oldest prison in England.

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

The largest of London's subterranean rivers and once a mad, bad center of London life.

A hands-off space for graffiti artists to hone and display their skills.

Originally built for London’s cab drivers, this bright green hut now serves anyone a hot drink or meal.

The oldest cemetery of modern-day Athens blends the modern and ancient worlds.

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

This gem is often wrongly overshadowed by the larger, newer Metropolis church in Athens.

The world's largest collection of witchcraft regalia.

Displaced highlanders would take shelter from the wet Scottish climate under the large walled bridge at Glasgow Central Station.

An essential stop before plundering, BYO Cutlass.

Cliffs full of fossils at the portal to England's Jurassic Coast.

The Victorian-era greenhouse is stuffed with tropical plants, and open 365 days a year.

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

150 or so scrounged-up lamps, chandeliers, and lanterns light up this alley in central Athens.

The cedar tree in Highgate Cemetery earned its title by accident.

A vast overgrown cemetery, once known as one of London's "Magnificent Seven."