In the early Roman Empire, people deemed traitors and criminals were tossed to their deaths from this rock.

This ancient Roman arch misled treasure hunters for centuries.

This one-of-a-kind Roman arch is not actually dedicated to the god Janus.

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

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

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

A statue representing a lost Roman profession that was vandalized for centuries.

This Roman arch marks the location of an ancient gate at one of the Seven Hills of Rome.

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

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 mysterious chasm in the heart of the ancient Roman Forum, the Lacus Curtius was once believed to be a gateway to hell.

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.

Italian horror legend Dario Argento’s own shop hides a sinister museum-dungeon in the basement.

A small but very fascinating fountain in the center of Rome with four books and a deer carved.

A deep mark on the remains of a Roman temple, believed to be left by a legendary warrior.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

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

An ancient Egyptian obelisk is now used to commemorate fallen Italian soldiers.

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

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

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