A two-hour hike in the Orfento Valley leads to the remote ruins.

Ever loyal to Roma, the small village of Albe in the Abruzzo region carried on until an earthquake did it in.

This castle was once the home of one of the most powerful women of the Renaissance.

The hermit's humble home is hidden near the forested peak of Monte Marrone.

The oldest church in Mantua was buried for centuries under the facades of other structures.

The eerie ruins of this feudal fortress witnessed the execution of 60 conspirators in 1387.

Also known as "Hell Alley," this tiny street in Imola gained its name in a bloody episode in the 16th-century.

This medieval oratory decorated in magnificent frescos was constructed after Charlemagne received a vision.

A trail of footprints discovered after a landslide was left not by the Devil, as originally believed, but by an early human ancestor.

A mountain cave is the site of archaeological findings and Paleolithic rock art.

A Roman temple perched over an Italian town, forgotten several times over.

Nine caves filled with recently-discovered archaeological finds under the houses and the streets of the most ancient district of an old town.

This medieval castle was home to a known tyrant and features several hidden passages.

A small thermal park among the mountains of Southern Italy features a surprising piece of modern art.

Host to the annual Festival of the Snakes.

The ruins of this Roman temple dominate the small city in southern Lazio.

What appears to be an ancient Roman temple is actually a Catholic church.

Ancient, mysterious stone altars are hidden among wild woods in central Italy.

These caves are home to a small church and were used to age cheese.

One of ancient Etruria's most spectacular archaeological sites with impressive necropolises and rugged landscape.

Was this cave created by Hercules's wrath, the devil, or volcanic activity?

It took more than 300 years to build this church, which is home to two sacred vessels believed to hold the blood of Christ.

This Roman underground canal was the longest tunnel ever built until the late 19th-century.

A room filled with frescos that make it seem like the walls are crumbling down while giants die in despair.