Medieval torture techniques with a modern conscience.

The astonishing collection of an infamous criminologist.

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

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

This real life asylum of horrors is now an abandoned ruin that hides the unbreakable code to one patient's insanity.

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

A Nesting Doll of Churches.

The location of the last witch trials of Italy, known as "The Salem of Europe."

This domed temple was built in a hidden cave mouth as a refuge for sinners seeking absolution.

David Sedaris called it "The greatest shop in the world."

This giant middle finger statue sends an unambiguous message to Italy's bankers.

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

Skulls from the plague of 1656 and World War II bombings are united by a cult dedicated to caring for the ancient dead.

Jesus' footprints and the first catacombs in the world.

The largest and most famous wax anatomical collection anywhere in the world.

An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

The skull of the patron saint of lovers lies in the Basilica di Santa Maria in Cosmedin—maybe.

The oldest operating pharmacy in the world features 800-year-old recipes.

At the crypt of St. Mary of Eulogies and the Dead you are left alone to ponder mortality among piles of skulls.

Thousands of well-dressed mummies below a monastery.

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