An Italian hillside ghost town.

The final resting place of the poets Shelley and Keats.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

The engineering wonder and pleasure dome of a much-maligned emperor still holds undiscovered secrets.

This former Roman Catholic Church still contains the embalmed hearts and organs of 22 popes.

An alchemist's "magic door" stands in the middle of a Roman park.

Museum dedicated to literary greats of the Romantic Period is also the home in which Keats met his untimely end.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

This quaint Italian town keeps losing ground as the sides of its plateau slowly erode.

Abandoned cemetery of the former Psychiatric Hospital of Volterra.

This real life asylum of horrors is now an abandoned ruin that hides the unbreakable code to one patient's insanity.

Medieval torture techniques with a modern conscience.

These medieval skyscrapers dominate the skyline of this small Tuscan town.

The oldest operating pharmacy in the world features 800-year-old recipes.

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.

The middle finger of modernity.

Renaissance hospital featuring a rotating door into which unwanted babies were dropped.

Overlooked amid the tourist bustle of Florence, this museum is dedicated to the craft of stone inlay.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

Sitting on an Italian hilltop is this surreal fortress built by the mad inventor of electrohomeopathy.

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

An eccentric artist's abode in this small Italian town has been transformed into a surreal temple of mosaic madness.

The rocky remains of an ancient Greek forest.

This town named for the ancient God of War is home to fewer than a thousand people, but it's the birthplace of the Greek Revolution.