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

This abandoned Brutalist treehouse is a hidden architectural relic.

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

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

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

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

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

Dug as a secret royal escape route, the tunnel became a wartime bomb shelter and dumping ground for vintage cars.

Pilgrimage site for star-crossed lovers.

Ruins of a 10th century church tucked away deep in a botanical garden.

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

This 16th-century monastery has been turned into a surrealist architecture compound.

One of the world’s smallest bars, just 13 square feet, is brimming with speakeasy flair.

The abandoned "Ghost Mansion" was left to decay in the mountains of Northern Italy.

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

An Italian hillside ghost town.

Five candy-colored villages on the Italian Riviera.

This giant middle finger statue sends an unambiguous message to Italy's bankers.

As can be expected from a centuries old church built in a canal city, the undercroft of this house of worship is beautifully flooded.

Geothermal waterfalls in Tuscany.

The final resting place of the poets Shelley and Keats.

Stalactites and stalagmites in a beautifully lit cave.

Pompeii's less famous neighbor is still revealing her secrets.

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