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

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

A rare example of a medieval house in Rome adorned with a melancholic inscription.

The only remaining arch of the oldest stone bridge in Rome stands in the middle of the Tiber.

This is the oldest Roman-made bridge in the city still existing in its original state.

This ancient market is often referred to as the oldest shopping mall in the world.

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

Crispy, cheesy rice balls—the Roman answer to arancini—take center stage here.

Inside this McDonald's you can dine on your Big Mac and fries next to a 2,500-year-old Roman wall.

Installed in an act of one-upsmanship, the annual sundial in this church is also a symbolic victory for the Gregorian calendar.

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

Rome’s legendary peephole vista is also a former Crusader stronghold.

2300-year-old Roman road connecting the empire.

Fountain where visitors can earn a license to be mad.

This medieval mountain town is also known as the "Village of Streams."

A map of Italy made entirely of trees.

Romans built the world's tallest artificial waterfall in 271 BC.

This picturesque Umbrian city has a subterranean side that has long remained hidden.

Geothermal waterfalls in Tuscany.

First founded in 1472, this is the oldest bank in the world. Its history may explain why we call financial institutions "banks."

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

Once an ancient Roman bath, now a hotbed of geothermal energy and a hub for energetic innovations.

This deceiving white sand beach gets its brilliant hue from the chemical discharge of a nearby factory.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.