Venice's island of the dead.

An ancient artistic garden parlor full of hidden water wonders.

The Pope’s secret escape route.

Virgil's many-mouthed gateway to the underworld.

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

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

This Italian foot path winds through the mountains via 52 individual tunnels.

Where Aleister Crowley taught magick in "La Chambre Des Cauchemars," his "Chamber of Nightmares."

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

A Nesting Doll of Churches.

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

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

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

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

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

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

This domed temple was built in a hidden cave mouth as a refuge for sinners seeking absolution.

This sword isn't waiting for a king to pull it out. It was placed there by a saint.

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

Jesus' footprints and the first catacombs in the world.

Abandoned medieval hill town.

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

An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

An Italian hillside ghost town.