This submersible road connecting a French island to the mainland is lined with safety towers for when the tide strands travelers.

The artist and his brother are buried in a landscape straight out of a van Gogh painting.

The world's largest reflecting pool is just two centimeters deep.

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

A popular shrine where the Blessed Virgin allegedly appeared in 1830, displaying a holy armchair and two incorruptible remains of Lady Saints.

Noirish green neon marks the location of one of the oldest private detective agencies in France.

A modern-day Lascaux cave underneath Paris.

This historic island prison holds one of the dungeons from the Count of Monte Cristo even though it is a work of fiction.

Historic medieval fortified city in southwest France.

At Monet's beloved home you can still see the Japanese bridge, waterlilies, and weeping willows that were the subjects of some of his most iconic paintings.

A Gothic cathedral created from volcanic rocks.

A font of vintage porn on the silver screen.

This natural French spring has been turned into a magical grotto by Roman and medieval constructions.

A Parisian exterminator's shop whose storefront displays stuffed rats hanging from traps.

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

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

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

Statue of death tucked in the University of Medicine courtyard.

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the 20th century.

A mechanized clock where a man fights off a dragon, crab, and rooster.

A museum of carnival attractions where you are invited to ride the rides.

This modest marker near Notre Dame identifies the very center of Paris.

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

A Jenga-style cylindrical tower of books that appears to go on forever.