This traditional festival celebrates a family of wooden giants that have survived Nazis, wars, and religion.

Longest canal tunnel in the world, abandoned in the 1960s.

This building’s ghostly exterior reflects its former lives as a prison, school, and funeral home.

Fighting the British and making game shows for over 150 years.

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.

A massive, secret marina for the Nazis' most formidable weapon in the Atlantic.

Underneath a chalk hill in France lies what Hitler hoped would be the underground launching base for a devastating new weapon.

If they push on just the right spot, even the weakest person can move this titanic boulder.

A simple plaque on the facade is the only reminder that the treaty ending the American Revolution was signed inside.

The post-apocalyptic remnants of a bucolic town ruined by a plane crash.

The world's tallest bridge is also possibly the most elegant.

Dedicated to the art of hunting, with juxtapositions of contemporary art.

Beautiful carved tunnels.

This stunning French estate was so lavish that it landed its original owner in jail for the rest of his life.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

A public park off the beaten path with a beautiful waterfall and 13th century Cistercian abbey.

These quaint French houses dangle precariously over a precipice.

A natural arch carved by a river gave its name to the so-called "Cave of Forgotten Dreams."

This stunning natural double arch, the largest in the Alps, went undiscovered until 2005.

An aluminum skeleton brings Chinese mythology to the French shore.

A French valley with forests so lush it was nicknamed "the Small Amazonia of the Pyrenees."

Do these monsters look familiar? The gargoyles on this church are all from pop culture.

Historic medieval fortified city in southwest France.