An eccentric artist's abode in this small Italian town has been transformed into a surreal temple of mosaic madness.

A cave in southern Italy adorned with thousand-year-old Biblical frescoes existed in obscurity until fairly recently.

A treasure trove of Renaissance-era funerary art in a Roman church built on top of Nero's grave.

This mosaic-lined medieval church was built by the world's first admiral and still holds mass in ancient Greek.

One man's quest to fix his toilet unearthed over 5,000 artifacts spanning more than 2,000 years of history.

A gorgeous medieval library where the books are kept in chains.

Crumbling ruins of the thermal baths that once attracted royals and aristocrats from throughout Europe.

Geometry and mystery come together in an epic show of octagonal masonry.

This entire town moved to a safe location after it was devastated by an earthquake, but the remains of the original town are still around.

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

A star-shaped fortress town fort built in the geometric model of the Renaissance utopian city.

These gutted monastery ruins still stand proudly in the middle of the Italian countryside.

The skulls and bones of thousands of soldiers line the walls of this small Italian chapel.

Ham is serious business at the Prosciutto Museum-Serious, delicious business.

A fake medieval village in the middle of Turin.

A fairytale-like medieval church perched atop a rocky cliff on Italy's "Coast of the Gods."

People have been living in the cave houses on this Italian hillside since the Neolithic era.

The Roman Emperor's lost summer home and grotto full of enormous sculptures sit along the Italian seashore.

A Milanese café entirely designed by the American director Wes Anderson.

Renaissance hospital featuring a rotating door into which unwanted babies were dropped.

Ancient snack bar of the Roman Empire re-opened.

An Italian ghost town that fought obscurity, until a mysterious illness brought it to its knees.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

This abandoned Brutalist treehouse is a hidden architectural relic.