A mysterious light of unknown origin on the backroads of Missouri.

The writer took refuge in this home in Southern France for the last 17 years of his life.

This mountain trail inspired Nietzsche to complete his magnum opus.

A Christian retreat founded to welcome refugees fleeing from the Nazis during World War II.

The site of the first medieval crusade that pitted Christians against Christians.

A remote hilltop covered in giant monoliths haunts the Brittany countryside.

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.

To the famous surrealist artist, liberty required two torches held high.

French commune at the heart of conspiracies.

An isolated 17th-century chapel on a remarkable site once dedicated to Celtic sun worship.

There has been an astronomical clock on this spot since the 14th century.

One of the oldest masonic museums in Paris.

One woman's decades-long obsession with the "La Fée Verte."

This French castle is said to have once held the Holy Grail but is now a gorgeous mountaintop ruin.

An iconic and eccentric bar for "Manouche" Jazz music keeps expanding its space—and its influence.

Avant garde house of Pierre Cardin on the Cote d’Azur.

A medieval military street hidden beneath a charming French fishing village.

The famous winding walk at Chartres is surrounded in mystery and myth.

This Paris art space celebrates the creativity and ingenuity that springs from abject poverty, especially in Africa.

This museum in a Paris apartment gives a unique look at the iconic French singer's life.

This massive blockhead sculpture hides an entire library.

The former home of France's controversial pop maestro is almost completely covered in ever-changing tributes and graffiti.

Historic medieval fortified city in southwest France.