This ancient Roman prison is decorated with an upside-down cross not as blasphemy but as saintly tribute.

This statue is the only female representation of Rome's "talking statues."

A rather vulgar example of the transition from Latin to the Italian vernacular.

A Nesting Doll of Churches.

The engineering wonder and pleasure dome of a much-maligned emperor still holds undiscovered secrets.

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

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

This medieval church in Rome was almost destroyed following a terrorist attack in 1993.

This ancient Roman arch misled treasure hunters for centuries.

These hut foundations are believed to be the residence of Romulus, founder of Rome.

The first statue to be added to Saint Peter's Square in over 350 years is an ode to migrants and refugees around the world.

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

This large, circular tomb is the final resting place of the first emperor of Rome.

This basilica is dedicated to two saints, one of which is known more for his famous quote.

Romans decided this 16th-century "talking statue" was so ugly, they named it after a primate.

Inside this building is another country within Rome, a sovereign entity without a physical territory.

Architectural monsters are devouring this palace's every door and window.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

The martyr's wax-enhanced skeletal remains lie preserved in a glass case in the Santa Maria della Vittoria in Rome.

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

Ancient ruins hidden underneath a modern luxury hotel.

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

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

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