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

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

Ever hear of the Milazzo Cage?

The final resting place of the poets Shelley and Keats.

The underground sanctuary of a mysterious ancient cult.

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

Jesus' footprints and the first catacombs in the world.

A fairy tale castle in modern Rome.

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

One of several skulls claiming to belong to the beheaded St. John the Baptist is on display at this Roman church.

St. Francesca Romana, patron saint of drivers, resides in the church she founded.

A mysterious chasm in the heart of the ancient Roman Forum, the Lacus Curtius was once believed to be a gateway to hell.

A Nesting Doll of Churches.

Site of a famous 19th-century transcendentalist utopian community, now abandoned.

This small New York museum celebrates the mountainous artwork of a Russian mystic.