Abandoned outpost once home to a murderous tyrant.

This fascinating museum in an old water tower holds the world's largest collection of Vodou artifacts from western and central Africa.

A unique museum tells the story of the day-to-day life of World War I soldiers.

These colorful French islands spent a stint bootlegging booze during American Prohibition.

Now a memorial, this factory was once used as a concentration camp for artists by the Vichy government.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

A daring D-Day assault by U.S. Army Rangers is commemorated atop the high cliffs of this strategic point.

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

The largest crypt ever constructed in France was built in the 11th century on an ancient Druid sacred site.

Fighting the British and making game shows for over 150 years.

The world's most famous cheese caves.

A massive, secret marina for the Nazis' most formidable weapon in the Atlantic.

A mud statue stands in the dark tunnels, seeming to hold up the weight of the city above.

Figures of unknown origin carved into the surfaces of underground caves.

Tables of secondhand books fill the inner courtyard of this 17th-century stock exchange.

This otherworldly French waterfall looks like its waters have turned to stone.

The construction of a tram line unveiled hidden remnants of the old medieval city.

The historic Masonic Lodge in which the first-ever female Mason was initiated.

Nicknamed the "Museum of Horrors," this French anatomical collection has been fascinating visitors for over a century.

This Parisian gem is one of the most incredible ethnographic museums in the world.

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

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

Trek into the depths of the cave where 17,000-year-old paintings exist alongside 400-year-old graffiti.

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