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

This hydrochronometer was invented by a Dominican monk and is a prime feature in this garden.

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

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

An Italian ghost town that fought obscurity, until a mysterious illness brought it to its knees.

This delightful little museum is dedicated to only one thing: pasta.

A Nesting Doll of Churches.

A hospital where antique dolls are given new life.

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 underground sanctuary of a mysterious ancient cult.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

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

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

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

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

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

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

This churchyard arbor is surrounded by hundreds of gravestones placed there by author Thomas Hardy.

A mysterious pair of mice eating a piece of cheese is London's smallest public sculpture.

An eccentric artist's abode in this small Italian town has been transformed into a surreal temple of mosaic madness.

“It has nae lugs!”

An open air haven for tropical monkeys in the damp moors of the English country.

A 26-foot shark sculpture—a statement about bombs—set off a municipal battle royale.