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

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

This small church was constructed over the ruins of three temples dating to the Roman Republic.

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

This ancient Roman arch misled treasure hunters for centuries.

Architectureal fantasy quarter of Rome.

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

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

A fortified medieval basilica on the Caelian Hill preserves extraordinary frescoes and one of Rome's most beautiful hidden cloisters.

Believed to be the remains of the lost Temple of Minerva, this nymphaeum has been known by its misnomer to this day.

Plaques on its facade commemorate the Tiber's most destructive deluges.

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

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

Legend has it that this bronze orb, which sat atop an ancient Egyptian obelisk, once held the ashes of Julius Caesar.

A massive marble foot is tucked away in a small alley near the Pantheon.

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

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

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

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

The remains of this 2nd-century Roman temple are incorporated into a modern building.

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

A Nesting Doll of Churches.

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

The ruins of the largest gladiatorial school in Rome are largely hidden under modern streets.