Fountain where visitors can earn a license to be mad.

Walk through a fairytale in Tuscany.

The oldest of Venice's plague quarantine stations, designed to keep the medieval city safe from disease.

The location of the last witch trials of Italy, known as "The Salem of Europe."

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

A mysterious chasm in the heart of the ancient Roman Forum, the Lacus Curtius was once believed to be a gateway to hell.

On rare days, this abandoned castle's gatekeepers open its doors, revealing the eye-popping splendor hidden inside.

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

A preserved dragon's rib that remembers the legend of the founding of the city of Atessa.

The world's most active stratovolcano is almost always erupting.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

An ancient artistic garden parlor full of hidden water wonders.

This centuries-old Italian chapel hangs midway down a sheer cliffside.

Ancient snack bar of the Roman Empire re-opened.

An underground paleo-Christian burial site composed of the remains of several cemeteries and Basilicas.

Jesus' footprints and the first catacombs in the world.

"Stairs of the Turks", a chalky white cliff eroded conveniently into stairs, allowing for easy pillaging.

One of the largest caves in the world open to the public.

This medieval Italian town is a sheer (and beautiful) cliffside defense.

A fairy tale castle in modern Rome.

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

The remains of a town so thoroughly destroyed by French forces that the citizens simply left.

Filled with goldfish swimming in a shallow pool of sea water, this ancient crypt is more wishing well than burial site.

The plague quarantine island home to the alleged "Vampire of Venice."