Home to items never before seen by the public.

This centuries-old gothic monster has been converted into a sprawling, glossy bookstore.

This museum has a most unusual location: inside a giant, three-headed elephant.

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

The mummified relic of St. Antoninus.

Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

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

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

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

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