This small, ancient Roman temple was once a church dedicated to the patron saint of penitents.

This curious, round temple is the oldest still-standing marble building in Rome.

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

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

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

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

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

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

Ancient snack bar of the Roman Empire re-opened.

The walls and streets of the ancient city are peppered with penises.

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

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

In the world's oldest university is a stunning 17th century anatomical theater carved from spruce.

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

A sinister pyramid in the Frari contains the heart of the famous neoclassical sculptor.

In the past, Renaissance sex workers were encouraged to entice customers on this bridge.

Time has been frozen at this station since the bombing in 1980—or so it was believed.

A massive line that stretches across the floor of Bologna’s largest church was created by a 17th-century scientist to measure the movements of the Sun.

The remains of an ancient Roman city are hidden underneath Bologna's beautiful public library.

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

Three hundred years of preserved Spanish colonial history in San Antonio.

A blacklight journey through a celestial art exhibit.

This fast-food outlet is the only space and UFO-themed McDonalds in the world.