Inside a former cabaret, seven floors of erotic art.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

The largest refracting telescope in Europe is housed on the grounds of a former French castle.

Europe's largest community of crocodiles and alligators.

A small museum of antique transport that's a must-see for bicycle lovers.

This secret cemetery where no flag is allowed to fly holds the bodies of American soldiers convicted of heinous crimes during WWII.

Small French town or alien garage?

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

For those late-night mollusk cravings.

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

A memorial to the nearly 10,000 American soldiers laid to rest on the beaches of Normandy during WWII.

This narrow path was cut right into a French mountainside to feed the country's early naval expansion.

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

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

This futuristic observatory at the top of the Pyrénées offers unrivaled views.

The encased skull that is widely believed to belong to St. John the Baptist.

The 16th-century church was kept in its ruined state as a reminder of the casualties of World War I.

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

Sleep in a climate-controlled plastic bubble for the night.

Walk through spectacular aisles of hanging meat and wagon wheel–sized cheese at the world's largest wholesale food market.

The artist and his brother are buried in a landscape straight out of a van Gogh painting.

The great Italian Renaissance painter was laid to rest here in the Chapel of Saint-Hubert.

A medieval military street hidden beneath a charming French fishing village.

This stunning natural double arch, the largest in the Alps, went undiscovered until 2005.