Home to the "Rat King" of Nantes and other wonders of the natural world.

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

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

Jean Tinguely's bizarre monster sculpture is hidden deep in a forest.

There is a strange little carving of a person seemingly crushed by a pillar behind the remains of St. Thomas Aquinas.

Natural mummies hidden in the crypt of a medieval French church.

Green labyrinth formed by a karstic maze hidden in a preserved oak forest.

This ancient theater was once the home of fierce gladiatorial battles.

This bridge was constructed from the rubble of the infamous Bastille.

Statue of a decomposing prince that once held his heart in its hand.

The deserted pirate-themed restaurant still entices explorers.

An art world insider finds himself battling for his artistic home.

A chapel on a volcanic core, marking the end of a successful journey.

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

A mosaic-tiled house built by graveyard sweeper Raymond Isidore.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

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

A well-preserved medieval village nested on a rocky outcrop and surrounded by a network of cliffs, natural bridges and canyons.

An ancient monastery, a locked room, and a mysterious book heist.

This salt marsh in Southern France is as pink as the flamingos that inhabit it.

A beautiful and classically designed villa, with an hourly infestation of monsters.

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

Historic medieval fortified city in southwest France.

A majestic lion statue guards this Parisian botanical garden, and feeds on an unsettling item.