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

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

What looks like a suicide in progress is actually a statue of Sigmund Freud.

This Prague museum collects brutalist relics and memories from the country's former Soviet rule.

In Florence's great Duomo, a 26 foot fresco honors a mercenary famous for attacking Florence.

A copy of the famous statue can be found in this Florence piazza, along with one of the most breathtaking views of the city below.

A slightly creepy gallery of plaster cast models in the same museum as Michelangelo's David.

One of Catholicism's four major basilicas has a series of papal portraits that are said to predict the end of the world.

The mystic whose incorrupt corpse still attracts the faithful.

The studio built by fascists in the hopes of "reviving the film industry" with the occasional propaganda film opportunity thrown in.

An incredible menagerie of more than 3 million taxidermied animals at the oldest science museum in Europe.

The mummified relic of St. Antoninus.

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

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

A mysterious chasm in the heart of the ancient Roman Forum, the Lacus Curtius was once believed to be a gateway to hell.

A hospital where antique dolls are given new life.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

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

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

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

Architectural monsters are devouring this palace's every door and window.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

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

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