This structure atop a craggy cliff in one of the most beautiful parks in Paris boasts an unbeatable view.

This collection of French root art looks like an indoor fairy wonderland.

An unusual number plate signifies the building's saucy past.

A medieval church with largest and oldest collection of Renaissance frescoes in France.

Ivy-covered Medieval tunnels cut through this charming town in France's Loire Valley.

The Cimetière des Chiens et Autres Animaux Domestiques is one of the oldest pet cemeteries in the world.

The narrowest street in Paris.

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

Since ancient times these picturesque springs have been providing bathers with healing waters.

A museum which takes visitors to the côté obscure of Paris.

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

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

Hundreds of secret cabinets built into the walls of legendary poisoner's private work room.

A self-built mosaic house and sculpture park.

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

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

The spiral staircase hidden inside this giant Parisian column was likely built for Catherine de Medici's astrologer.

The oldest and smallest cemetery in Paris is only open to the public twice a year.

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

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

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

Sleep in a climate-controlled plastic bubble for the night.

This innocuous-seeming building is actually the remnant of a major wartime brothel.

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