This 13th century castle is chock full of ghosts and impossibly rare cows.

A controversial blue hoop has been puzzling freeway drivers since 2013.

This unique bridge has been a staple across the Saskatchewan River Valley for more than 100 years.

This now abandoned arch bridge was constructed during the Great Depression.

Try the alligator at this fondue spot, which has been catering to "lovers and hedonists" since 1967.

Though many were skeptical at first, these animal-specific routes across the Trans-Canada Highway have been a major conservation success.

Decorated by local artists, the city's utility boxes have become three-dimensional canvases.

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

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

There's an exclusive Beefeaters pub hidden in the Tower of London.

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

Graffiti from the 16th and 17th centuries cover the walls of this part of the Tower of London.

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

These wire animal sculptures commemorate the exotic inhabitants that once called the Tower of London home.

The sixth of London's "Magnificent Seven" cemeteries, and a source of unlikely inspiration to Beatrix Potter.

A makeshift shrine to the late rock star is still kept up on the nondescript façade outside 1 Logan Place.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

A homage to the King at the hotel where he revived his career.

An enormous illuminated figure dances on the Las Vegas strip.

A giant open-air sculpture made of over 200 full-sized boats.

Formerly the world's largest, this Willy Wonka-esque contraption runs 24/7.

An overlooked monument to the celebrity gangster who helped put the sin in Sin City.

An exotic wildlife habitat right off The Strip.

One of the world's tallest Ferris wheels takes visitors high above Las Vegas in a spinning party room.