A strangely curved lamppost stands tall over this avenue in Rotterdam.

Rotterdammers' dirty minds gave this Santa a dirty nickname and cursed it to a life of wandering.

This charming pup is meant to celebrate the youth and stubbornness of the city's students.

A nearly 25-foot concrete sculpture of Sylvette, Picasso's muse.

Elegant marble and old vaults fill this historic Dutch bank turned office space.

A dramatic art installation features a BMW flying out of a building in Rotterdam.

A statue of the second-tallest Dutchman in history.

These lights mark the area of Rotterdam that was bombed and burned in 1940.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

This small museum located under the famous cube houses, is home to some 30,000 chess pieces.

A modern reimagining of a medieval city gate.

Four giant movable street lights decorate this modern Rotterdam square.

Old ships and machinery fill a historic harbor in the city that's home to Europe's largest port.

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

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

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

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

The monster at the center of the Darwin Center Spirit Collection.

A naturally mummified 2,000-year-old man.

The London pub overlooks where the Mayflower was moored before setting sail for the New World.

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

An small and easily overlooked archaeology museum chock full of Egyptian artifacts.

Repository for more than 22 million pickled specimens.

Eighty million natural history specimens call this gargantuan museum home.