Crushed coral and crystals give the sand its signature coloration.

Once the hottest nightclub in France, Amnesia now lies in ruins after a 2000 bombing.

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

This one-of-a-kind archeological site is home to strange prehistoric ruins, the original use of which is still a mystery.

Stalactites and stalagmites in a beautifully lit cave.

The titular "little arch" near this Italian resort is one of the most popular diving spots in the country.

A wild annual race in Sardinia re-enacts Constantine's victory in Rome.

The childhood family home of Italian Marxist theorist and politician Antonio Gramsci.

This elaborate hole in the ground was built as a sacred site for an ancient civilization.

This mysterious Sardinian festival sees a horde of blank-faced equestrians compete for tin stars.

Ancient cave tombs known as the "houses of fairies."

This tremendous timepiece was once the largest cuckoo clock in the world.

An Italian geologic wonder that served as the inspiration for the landscape of Dante's hell.

An 11th-century mountaintop fortress that played a crucial role in Italy's papal wars is now a vacation rental.

This zoological museum began as the first great curiosity cabinet.

The mummified relic of St. Catherine sits forever on a golden throne.

An extraordinary collection of 18th century anatomical waxworks.

A diverse collection of wax, bone, papier-maché and mummified relics.

In the world's oldest university is a stunning 17th century anatomical theater carved from spruce.

Once known for its horse-powered knife sharpening, this 200-year-old shop offers an array of blades and hard-to-find culinary tools.

The remains of an ancient Roman city are hidden underneath Bologna's beautiful public library.

A hospital where antique dolls are given new life.

A Nesting Doll of Churches.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.