The video game-themed street art first popped up in the French city.

An effigy of a trapped paratrooper dangles from a Normandy church to commemorate one remarkable D-Day event.

These unique markers designate the route American forces took during the Liberation of France.

Bloodstains can still be seen in this medieval church where two medics saved lives on D-Day.

This symbol of the French Revolution still stands where it was first planted during the 18th-century.

A memorial to the nearly 10,000 American soldiers laid to rest on the beaches of Normandy during WWII.

Remains of the artificial harbours invented for the Allied invasion of Normandy can still be seen at sea.

His "Lionheart" is entombed separately from the rest of his body.

A monument to the thousands of Canadian soldiers who died capturing the French ridge during World War I.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

This old KLM airplane cut into three parts was transformed into an eclectic airport gift shop.

The 20-mile causeway that separates the Netherlands from the sea.

This small town in the Netherlands has no roads but instead, miles of canals and over 100 bridges.

Birthplace of the "Cat in the Cradle" and a cluster of iconic, original windmills that let the Dutch tame the seas.

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

The largest bell in the world has been swinging high above a Cologne cathedral for almost a century.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

The Bauhaus-style former industrial complex is considered the world's most beautiful coal mine.

An elegant chandelier hangs over this ancient sewer chamber, now open for concerts and public tours.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

A church filled with the bones of hundreds of virgins martyrs—or so they say.

This "floating railway" is one of the world's oldest monorail systems.

The fairy tale castle of the "fairy-tale king."

Brussels' favorite peeing boy has a sister.