A resort destroyed by a mysterious bombing offers visitors only its remains and the riddle behind it's demise.

France's highest manned weather station is the only one still inhabited by meteorologists.

This abandoned church in central Lyon is missing its front stairs.

An abandoned nightclub has become a vibrant work of art.

A suspended footbridge allows for traversing this gorge carved through the French Alps.

Half a century after it was abandoned, this ghost town is coming back to life.

A total of 22 tiny bridges cross this canal of the Yvette River, forming a unique trail.

Trek up this glacier before it disappears.

Exquisite examples prehistoric bas-relief carvings.

This crack in France's seaside cliffs once hid a sinister secret.

The remains of this castle, known as the Witch’s Eye, watch over the Thur Valley.

15,000 year old bison sculptures.

Old vessels have been transformed into artistic canvases in this unusual cemetery.

One of the great treasures of Neolithic art lies within this carefully constructed pile of rocks.

Longest canal tunnel in the world, abandoned in the 1960s.

A 2017 crowdfunding campaign saved this historic castle from being destroyed.

The storefront of a ramshackle Parisian puppet theater.

A huge Megalithic chamber tomb located behind a cafe.

This army of concretions is an unexplained geological phenomenon unlike anything else in the world.

An atmospheric, medieval-themed book store hides in a 13th-century underground space.

A sanctuary for wolves in a community which once trembled in fear of the murderous "Beast of Gévaudan."

These medieval ruins have survived since the 12th century, even providing shelter from the Nazis.

Bordered by forest on three sides and the ocean on the other, the Great Dune of Pilat is the highest sand dune in Europe.

Series of underground houses inhabited continuously for centuries.