Legend has it that this bronze orb, which sat atop an ancient Egyptian obelisk, once held the ashes of Julius Caesar.

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

One of the oldest libraries in the world is still operating and contains the oldest existing document in the Italian language.

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

Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.

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

This Roman amphitheatre was also the location of the first gladiator school.

According to the legend, this structure was built in a single night with the help of the devil.

A colossal aqueduct from the second century B.C., deeply hidden in a gorge on the outskirts of Rome.

An abandoned village that resides along the mountains of the Aosta Valley.

This clifftop arch is a natural stunner.

The city of Parma's cathedral is home to one of the greatest illusionistic frescoes of the Renaissance.

An ancient Roman temple first dedicated to an emperor's wife is now a church.

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

Also known as the Temple of Poseidon, this is one of the best-preserved Greek temples in the world.

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

A massive marble foot is tucked away in a small alley near the Pantheon.

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

Claude Monet immortalized this medieval bridge in two of his paintings.

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

These artificial caves crafted by ancient Romans were elaborate fish farms for moray eels.

This enormous sinkhole hides a secret world created from divine wrath.

A massive bridge forms part of an aqueduct that was deemed an architectural wonder of its time.

This hydrochronometer was invented by a Dominican monk and is a prime feature in this garden.