Over 100 artworks are painted on the walls of this town, making it an open-air museum of contemporary art.

Natural cathedral designed by Italian artist Giuliano Mauri.

Stone memorial that's said to predict the death of the pope and the site of the Cadaver Synod.

The underground sanctuary of a mysterious ancient cult.

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

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

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

A fairy tale castle in modern Rome.

In Rome’s Jewish ghetto, a 200-year-old bakery still makes the neighborhood’s historic sweets.

Architectureal fantasy quarter of Rome.

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

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

A forgotten "city of water" underneath the famous Trevi district.

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."

Inside this McDonald's you can dine on your Big Mac and fries next to a 2,500-year-old Roman wall.

In the world's oldest university is a stunning 17th century anatomical theater carved from spruce.

Once known for its horse-powered knife sharpening, this 200-year-old shop offers an array of blades and hard-to-find culinary tools.

An extraordinary collection of 18th century anatomical waxworks.

The Roman Emperor's lost summer home and grotto full of enormous sculptures sit along the Italian seashore.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

An extensive collection of reliquaries containing the bones of saints housed in the largest Catholic church in Venice.

Go inside to really appreciate this 500-year-old technological masterpiece.

Those who own or stay at this 500-year-old, allegedly cursed house often meet terrible fates.