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

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

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 best preserved Paleochristian basilica in Rome hides a number of oddities and secrets.

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

The final resting place of the poets Shelley and Keats.

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

2300-year-old Roman road connecting the empire.

The studio built by fascists in the hopes of "reviving the film industry" with the occasional propaganda film opportunity thrown in.

Gods clash with machines in a power plant regenerated as a museum.

Nicknamed “The Mushroom,” this unique water tower has been featured in several iconic movie scenes.

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

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

A large replica of a monumental Roman inscription is located on the side of this museum.

This Italian stadium makes liberal use of fascist statuary to evoke classical sporting arenas.

A modern sliver of architecture in Roma.

The former home of an Italian artist is now a shrine to his ambitious works.

A treasure trove of Renaissance-era funerary art in a Roman church built on top of Nero's grave.

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

A monumental fountain in Rome features a large statue of Moses that has been criticized for centuries.

A sculpture serving as an homage to Pope John Paul II.

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

A fairy tale castle in modern Rome.