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

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

A hospital where antique dolls are given new life.

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

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

The underground sanctuary of a mysterious ancient cult.

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

St. Francesca Romana, patron saint of drivers, resides in the church she founded.

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

2300-year-old Roman road connecting the empire.

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

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

An 18th century fountain and two columns are all that remains of Rome's forgotten river harbor.

One of the most important yet well-hidden museums dedicated to the history of medicine.

The first Russian Orthodox church in the Catholic city of Rome in almost a thousand years.

The final resting place of the poets Shelley and Keats.

Swirling layers of white and red rock earned these mountains their festive nickname.

This amazingly well-preserved villa just outside Pompeii boasts rare examples of ancient Roman paintings.

This hidden alley near the location of Rome's first theater was the site of a curious miracle.

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

Russian researchers who have been excavating ancient squirrel burrows may have brought a 32,000-year-old plant back to life.

Home of the future Emperors of Russia.

Hidden in a metro shop under a shopping mall, this small museum tells the story of one of the world's largest urban transit systems.

Former headquarters of the KGB.