More sculpture than building, this architecturally significant temple was built on the spot of Saint Peter's crucifixion.

Breathtaking and huge 430 year old maps of Italy.

The Pope’s secret escape route.

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

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

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

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

The world's highest and most dangerous infinity pool lies at the precipice of Victoria Falls.

The naturally mummified body of a peasant girl saint.

A small man-controlled waterfall powers an Art Nouveau elevator and is accessed via narrow gauge, solar-powered tramway.

Underneath this small church are 15,000 bones, arranged by an obsessive academic.

A church of bones, decorated with 40,000 human skeletons.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

A 400-year-old mummified arm dangles from the ceiling of St. James the Greater, serving as a warning to thieves.

100 year tradition of fist fights, marked by marble footsteps.

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

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

The plague quarantine island home to the alleged "Vampire of Venice."

Venice's island of the dead.

A dismembered holy head stares out from her beautiful reliquary at the St. Dominic Basilica.

Ham is serious business at the Prosciutto Museum-Serious, delicious business.

An Italian geologic wonder that served as the inspiration for the landscape of Dante's hell.

Renaissance villa and gardens complete with a tormented colossus.