Hanging within this medieval church are the bones of a beast allegedly slain by a fourth-century saint.

Medieval town turned hippie commune, once home to the secret foreskin of Jesus Christ.

A complex, nine-layer maze on the grounds of a Venetian doge's playground.

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

The best preserved Paleochristian basilica in Rome hides a number of oddities and secrets.

Those who own or stay at this 500-year-old, allegedly cursed house often meet terrible fates.

Crossing this suspension bridge feels like walking through the sky, a fitting tribute to the head of the Apollo program.

This abandoned Brutalist treehouse is a hidden architectural relic.

This Tuscan lake hides a 13th century town that is still visible when the water recedes.

An incredible menagerie of more than 3 million taxidermied animals at the oldest science museum in Europe.

The Sighignola summit on the Swiss border offers views so breathtaking it's been named one of the most beautiful places in Italy.

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

This museum is rotten with a century of wax medical deformities.

This hill made entirely of ancient Roman jars was simply a garbage dump to the people of the time.

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

The secret medieval communication system will whisk your words above the noise of the crowd.

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

Eco-village hidden in the foothills of the Alps that created a massive system of psychedelic underground temples.

This immaculate and historic water garden culminates in a massive stone dining table with an inset fountain for chilling the wine of the Cardinal's guests.

A fairytale island floats in the middle of Italy's little-known Lake Orta.

This ancient Roman prison is decorated with an upside-down cross not as blasphemy but as saintly tribute.

A magnificent waterfall is also home to the remains of a Roman hydraulic engineering system.

A sinister pyramid in the Frari contains the heart of the famous neoclassical sculptor.

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