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

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

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

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

Jesus' footprints and the first catacombs in the world.

2300-year-old Roman road connecting the empire.

Breathtaking and huge 430 year old maps of Italy.

A Nesting Doll of Churches.

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