Hidden in plain sight, this creepy sculpture watches from above.

Besieged by war, this castle ruin has crumbled into a peaceful picnic spot.

Famously misunderstood wonder of the ancient world

Washington's iconic carousel has a nice piece of Civil Rights history.

The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

This Norman castle was once the site of a Victorian-era prison, and now exists as a luxury hotel.

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

This statue dedicated to the story of a Flemish boy and his dog was relatively obscure in Belgium, but a cult sensation in Japan.

A little sculpture with a large wardrobe.

A fantastical 13th-century fortification sandwiched by a modern hotel in central Brussels.

Cozy basement bar sports an inventory of over 2,000 beers.

The wooden airship was the largest flying boat ever built.

This gigantic monument hidden in the woods was built to thank the Dutch for sheltering Belgian refugees during World War I.

Remnants of a storybook amusement park hidden behind a strip mall.

The first memorial dedicated solely to the Black troops who fought for the Union.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

The "lovely red Vega" of the legendary record-settling pilot.

Wooden sleds have replaced donkeys to cart goods around this utterly charming car-free village.

A former mental hospital founded in the 1930s by a eugenicist who advocated for the forced sterilization of patients.

Outdoor exhibits explore the contributions of European, African, and indigenous peoples to American frontier culture.

Once a palace for the Archbishop of York, these 15th-century ruins now serve as a haunt for history buffs.

A 13th-century inn where the ill-fated King Charles I spent his last night of freedom.

The spot where Oxford garnered its name was also home to a medieval philosopher and includes a house covered in statues.

One of Oxford's greatest treasures likely belonged to England's legendary King Alfred the Great.