A collection of objects supposedly singed by the hands of souls in purgatory.

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

This hidden alley near the location of Rome's first theater was the site of a curious miracle.

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

Museum dedicated to literary greats of the Romantic Period is also the home in which Keats met his untimely end.

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."

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

An alchemist's “magic door” stands in the middle of a Roman park.

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

The final resting place of the poets Shelley and Keats.

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

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

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

Rome’s legendary peephole vista is also a former Crusader stronghold.

This hill made entirely of ancient Roman jars was simply a garbage dump to the people of the time.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

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

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

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

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

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

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

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