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

Ever hear of the Milazzo Cage?

One of the most important yet well-hidden museums dedicated to the history of medicine.

The ruins of an abbey believed to have been founded by Charlemagne in the 9th century.

A huge enchanting public park just outside the ancient walls of Rome.

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

This historic recreationist school churns out warriors that may very well have had a fighting chance in Rome's pits of the day.

More sculpture than building, this architecturally significant temple was built on the spot of Saint Peter's crucifixion.

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

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

One of seven Jewish catacombs in Rome and one of only two open to the public.

This picturesque Umbrian city has a subterranean side that has long remained hidden.

Installed in an act of one-upsmanship, the annual sundial in this church is also a symbolic victory for the Gregorian calendar.

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

The famous sculptor left his mark on this Italian wall in an internationally protected example of street art.

One of several skulls claiming to belong to the beheaded St. John the Baptist is on display at this Roman church.

A sunken idol welcomes parishioners to Davy Jones' Locker.

Virgil's many-mouthed gateway to the underworld.

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

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

A Nesting Doll of Churches.

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

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

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