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

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

The mental institution where Van Gogh created some of his most famous work now allows guests to walk in the artist's footsteps.

The tomb of a hard traveling saint is constantly covered in shoes as offerings to heal disabled youth.

An art world insider finds himself battling for his artistic home.

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

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

This remarkable checkered church on a Corsican hilltop is fabled to have been built by angels.

This Corsican Neolithic site is full of pre-Roman megalithic structures that may or may not be penises.

A cave dwelling that was started by the Celts, expanded by monks, and finished by knights.

Resting on a hill overlooking the coast, these medieval ruins look completely deserted save for their restored chapel.

This salt marsh in Southern France is as pink as the flamingos that inhabit it.

In the best of all possible worlds, everyone will get a chance to see this statue in which Voltaire's heart is interred.

This church sits upon a peaceful hill and a long, turbulent history.

A well-preserved medieval village nested on a rocky outcrop and surrounded by a network of cliffs, natural bridges and canyons.

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

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

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

A modern-day Lascaux cave underneath Paris.

A neighborhood church's unusual abstract stained glass was the final project of avant-garde artist Jean Cocteau.

A Christian retreat founded to welcome refugees fleeing from the Nazis during World War II.

A remote hilltop covered in giant monoliths haunts the Brittany countryside.

This small Estonian hill is covered in hand-made twig crosses that are said to bring good luck.

A floating underwater hotel, created by a Swedish artist.