This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

One of a series of no-purpose kinetic artworks by Swiss sculptor Jean Tinguely.

These spooky and unusual stone formations create an underworldly landscape.

This whimsical castle of grottoes was the labor of love of a French postman, and one of the greatest achievements of outsider architecture.

This lovely little bridge hidden in a Switzerland gorge is essentially a fairytale.

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

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

An icy lake tucked among jaw-dropping alpine panoramas.

One man's desire to transcend art led to the construction of this outsider chapel.

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

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

A self-built mosaic house and sculpture park.

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

The fantastic architectural models of a French traveler.

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

The history of radiation is on safe display at the foot of a radiation science laboratory.

A surrealist timepiece by the artist of melting clocks.

Paris' linguistic guide to the international language of, yes, love.

A wildlife paradise, this island is one of the world’s most important habitats for burrow nesting seabirds.

This wildly-tiled artist's palace is a living and growing account of the creator's life, loves, and labors.

An English artist has turned an unassuming ex-council house into a time-lost house of mystery.

This crumbling folly looks like an enchanted left over from Middle Earth.

This beautiful "lagoon" is actually a toxic soup filled with cars, carcasses, and trash. When warnings couldn't stop people from going for a dip, the town dyed it black.

This tangled English forest looks like something right out of a fairytale.