The burial place of an obscure North African saint was turned into a macabre body preservation factory for the 17th-century Neapolitan elite.

Every day is like Christmas on this street where the traditional Neapolitan nativity scene comes to life.

The relics of dozens of martyrs are stored in a single chapel.

A forgotten "city of water" underneath the famous Trevi district.

Jesus' footprints and the first catacombs in the world.

A sculpture serving as an homage to Pope John Paul II.

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

An ancient Egyptian obelisk is now used to commemorate fallen Italian soldiers.

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

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

A monumental fountain in Rome features a large statue of Moses that has been criticized for centuries.

The martyr's wax-enhanced skeletal remains lie preserved in a glass case in the Santa Maria della Vittoria in Rome.

This Art Nouveau mansion was used as the "House of the Screaming Child" in Dario Argento’s giallo classic.