These memorials built by an eccentric bachelor on the side of Interstate 5 cause both wonder and traffic accidents.

The only remaining historic maritime signal station in the United States.

The most photographed house in Maine looks good enough to eat.

Its unique collection details the history of the state's svelte railroads.

Largest institutional collection of tomb figures from Western Mexico in the United States.

The second-oldest garden cemetery in the U.S. was also a college brainstorm spot of Stephen King.

The first bridge observation tower in the U.S. offers one of the best views of Maine.

A collection of birdhouses await curious motorists and avian squatters.

When the town wouldn't allow the fast-food behemoth to build a new restaurant, they put one inside an 1850 home.

This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

Famously misunderstood wonder of the ancient world

Ancient human remains unearthed around the iconic monument.

This once-controversial and slightly confusing statue of Achilles was built out of captured cannons.

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

This bewitching Babylonian goddess haunts a hallway of the British Museum.

An architectural oddity hides in plain sight on this iconic London bridge.

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

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

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

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

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.

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

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