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

A dead saint, a deadly poison, and a mysterious holy ooze.

Dramatic sea stacks adorn the coast of this small village on the Adriatic coast.

A long-buried ancient ruin unearthed right in the middle of the city.

Geothermal waterfalls in Tuscany.

A magnificent waterfall is also home to the remains of a Roman hydraulic engineering system.

One of Rome's most picturesque and original bridges was also a popular choice for Grand Tour artists.

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

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

In a city that boasts four separate inclined cable railways, this is one of the busiest funicular lines in the world.

This medieval city gate is now a blend of the past and the modern world.

San Gennaro, the patron saint of Naples, greets pedestrians between these narrow city streets.

Every day is like Christmas on this street where the traditional Neapolitan nativity scene comes to life.

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

The yawning maw of this pagan visage is said to bite off the hands of liars.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

Also known as the Square Colosseum, this building is a prime example of fascist-era rationalist architecture.

This large, circular tomb is the final resting place of the first emperor of Rome.

The remains of this 2nd-century Roman temple are incorporated into a modern building.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

This ancient Roman arch misled treasure hunters for centuries.

This medieval church in Rome was almost destroyed following a terrorist attack in 1993.

This one-of-a-kind Roman arch is not actually dedicated to the god Janus.

Brass cobblestones mark the places where individual Holocaust victims were taken from their homes.