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

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

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

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

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

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

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

The "Great Sewer" of ancient Rome is one of the oldest sewer systems in the world, and is still in use.

This curious, round temple is the oldest still-standing marble building in Rome.

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

The skull of the patron saint of lovers lies in the Basilica di Santa Maria in Cosmedin—maybe.

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

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

A display of works by one of the world masters sacred art, an 18th-century Brazilian sculptor nicknamed "the little cripple."

This 17th-century Portuguese fort now houses a nautical museum.

A freedman baker’s lavish tomb has a relief showing various stages of Roman bread making.

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

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

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

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

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

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

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

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