19th century pendulum and a clock restored by a rogue group of guerilla artists.

The history of radiation is on safe display at the foot of a radiation science laboratory.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

Hundreds of prehistoric stones, arranged in perfect lines in a French field.

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

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

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

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

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.

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

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

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

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

A unique museum tells the story of the day-to-day life of World War I soldiers.

A memorial to the soldiers who died in the bloody battles to control Verdun in World War I.

This modern French ossuary contains the jumbled bones of 130,000 WWI soldiers.

Site of one of World War I's most horrific scenes.

The castle was reconstructed to fit Kaiser Wilhelm II's romanticized vision of the Middle Ages.

Explore this medieval cathedral by trying to spot all the malevolent monsters hiding in its beautifully colored windows.

A towering monument to war, located on a beautifully peaceful hill.

Berlin's old airport.