These "anatomical machines" are only one of the many strange items in this Italian crypt.

Skulls from the plague of 1656 and World War II bombings are united by a cult dedicated to caring for the ancient dead.

This ancient Roman arch misled treasure hunters for centuries.

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

The only remaining arch of the oldest stone bridge in Rome stands in the middle of the Tiber.

Roman politician Herodes Atticus built this nymphaeum to honor his wife, whom he may have murdered.

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.

Known for centuries as the famous Roman emperor's burial place, this monument is actually something else.

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

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

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

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

Rome's first modern graffito is all that is left of a peaceful protest from the 1970s.

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

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

Its interior is adorned with some of the best examples of early Christian mosaics.

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

This Italian stadium makes liberal use of fascist statuary to evoke classical sporting arenas.

This park on the outskirts of Rome boasts two ancient Roman aqueducts and a medieval tower.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

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

The best preserved Paleochristian basilica in Rome hides a number of oddities and secrets.

A treasure trove of Renaissance-era funerary art in a Roman church built on top of Nero's grave.