The old observatory in Copenhagen has a spiral corridor used as a racetrack.

The gilded, masterful astronomical clock will calculate time, dates, and planetary positions for thousands of years to come.

This pair of gilded girls atop an Art Deco building in Copenhagen were built to function as a weather indicator.

Copenhagen's celebrated theme park and gardens.

Bits of architecture from a town destroyed in World War I now decorate this hotel garden.

An image of the legendary saint stands in the shadow of a cathedral she liberated.

A sublime medieval path adorns the marble floor of one of the most beautiful Gothic cathedrals in France.

The encased skull that is widely believed to belong to St. John the Baptist.

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

This medieval tower is all that remains of the castle where Joan of Arc was held before being burned at the stake.

Old vessels have been transformed into artistic canvases in this unusual cemetery.

An abandoned beach resort in Normandy reclaimed by artists.

This 12th century, partially destroyed, abbey has had several owners and was seized during the French Revolution.

Folklore and history carved into Brittany's coast.

Sacked by Vikings, blessed by William the Conqueror, dealt a fatal blow during the French Revolution—these ruins have seen it all.

One of the oldest and largest wooden churches in France was very evidently constructed by shipbuilders.

This mountaintop mariner’s church is packed with model ships and nautical art while hosting an annual maritime festivity for the townsfolk below.

The Lone Star plaque hangs in a bombed-out bunker in Normandy to honor a Texan colonel's heroic actions on D-Day.

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

This enormous "cloth of the conquest" depicts the Norman invasion of England in mind-blowing detail.

Inaugurated in 1921, this is one of many statues in France dedicated to the people who died during World War I for their country.

A daring D-Day assault by U.S. Army Rangers is commemorated atop the high cliffs of this strategic point.

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

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