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

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

Architect Le Corbusier built his friend a cubist house to match his impressive collection of cubist art.

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

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

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

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

An icy lake tucked among jaw-dropping alpine panoramas.

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

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

An iconic and eccentric bar for "Manouche" Jazz music keeps expanding its space—and its influence.

One of the world's most complex timepieces.

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

A public park off the beaten path with a beautiful waterfall and 13th century Cistercian abbey.

This crumbling, graffiti-covered mansion sits tantalizingly within reach of the proletariat who frequent a public park.

BDSM, 1930s Style.

A tiled, multi-level garden of survival in Lyon.

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

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

A self-built mosaic house and sculpture park.

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

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

This Paris art space celebrates the creativity and ingenuity that springs from abject poverty, especially in Africa.

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