These "anatomical machines" are only one of the many strange items in this Italian crypt.

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

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

Installed in an act of one-upsmanship, the annual sundial in this church is also a symbolic victory for the Gregorian calendar.

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

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

This former Roman Catholic Church still contains the embalmed hearts and organs of 22 popes.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.