This shining multicolored metro station deep under Naples is said to be the most beautiful in Europe.

A sulfuric hellscape in southern Italy.

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

Milan's duomo is covered in beautiful carving including a curious "dinosaur-like" beast.

A fake medieval village in the middle of Turin.

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

Southern Italy's spinning top village.

"Stairs of the Turks", a chalky white cliff eroded conveniently into stairs, allowing for easy pillaging.

An underground paleo-Christian burial site composed of the remains of several cemeteries and Basilicas.

Ancient snack bar of the Roman Empire re-opened.

The world's most active stratovolcano is almost always erupting.

Erotic art covers the walls of the largest ancient pleasure palace.

Italian cave with exceptional acoustics and an unsavory history.

Medieval torture techniques with a modern conscience.

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

Virgil's many-mouthed gateway to the underworld.

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

These "anatomical machines" are only one of the many strange items in this Italian crypt.

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

Go inside to really appreciate this 500-year-old technological masterpiece.

Jesus' footprints and the first catacombs in the world.

An Italian hillside ghost town.

The skull of the patron saint of lovers lies in the Basilica di Santa Maria in Cosmedin—maybe.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.