An enchanting work of outsider art, full of whimsical sculptures and carvings.

This futuristic observatory at the top of the Pyrénées offers unrivaled views.

Bits of architecture from a town destroyed in World War I now decorate this hotel garden.

A quaint medieval millhouse hovers surprisingly above the waters of the Seine.

These crumbling Nazi artillery bunkers are now fair game for massive graffiti projects.

The sunken structure looks like the victim of a catastrophic flood.

One of the largest ochre quarries in the world, hidden in a limestone landscape.

If they push on just the right spot, even the weakest person can move this titanic boulder.

The industrial architecture honors the laborers who brought the Exposition Universelle of 1900 to life.

A magical, macabre wax museum, beloved by locals, uses real artifacts to depict an assassination from the French Revolution.

What looks like a normal building is really a hollow facade hiding a subway vent.

A 400-year-old church covered floor to ceiling in ex-voto offerings from the faithful.

Hundreds of dwarf beeches create an unusual, haunting forest in the north of France.

Former hunting lodge of a duke who was an avid collector of impressionist works.

This medieval tower is all that remains of the castle where Joan of Arc was held before being burned at the stake.

The post-apocalyptic remnants of a bucolic town ruined by a plane crash.

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

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

The remains of 40,000 humans, meticulously stacked in a tiny churchyard shed.

The narrowest street in Paris.

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

A swath of France so devastated by war it is still forbidden to go there.

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

Hundreds of prehistoric stones, arranged in perfect lines in a French field.