A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

An atmospheric, medieval-themed book store hides in a 13th-century underground space.

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

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

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

A bridge that dates back to the 12th century is said to have made the devil very angry.

A beautiful lighthouse with as many steps as days in the year, as many windows as weeks, and as many levels as months.

A total of 22 tiny bridges cross this canal of the Yvette River, forming a unique trail.

Legend has it this 11th-century castle was paid a visit from the devil.

The video game-themed street art first popped up in the French city.

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

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

Massive puppet-automaton machines created by French artist collective Machines de l’Ile.

Lyon, France is home to two remarkably preserved Roman theaters, one dating back to 15 BCE.

A 14th century bridge built as a fortress, where the devil lurks on one of its towers.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

This French ghost town from World War II has been left as a memorial to German atrocities during World War II.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

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

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

This ancient Visigothic church might hide an ancient treasure.