A collection of grotesques lines the walls of this Italian villa.

The mark of the Devil's horns on a marble column in Milan.

This curious building hides eclectic details like medieval gargoyles alongside naked angels and Art Nouveau mosaics.

Water and windows define this defensive Italian well.

Before there were doorbells this bronze ear was installed for visitors to announce their arrival.

Small on the outside, big on the inside, this church is an astonishing act of visual deception.

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

A fake medieval village in the middle of Turin.

The bomb-ravaged remains of of a colossal Neptune.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

A stunning cemetery famous for its extraordinarily delicate & lifelike mourning sculptures.

Southern Italy's spinning top village.

These medieval skyscrapers dominate the skyline of this small Tuscan town.

A lover's walk between hilltop towns, decorated with graffiti love notes.

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

Pilgrimage site for star-crossed lovers.

One of the earliest depictions of an Arthurian scene that is shrouded in mystery.

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.

Five candy-colored villages on the Italian Riviera.

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

2300-year-old Roman road connecting the empire.

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

Rome's semi-secret peephole vista is also a former Crusader stronghold.