This Neapolitan exhibition hall grants weird and wonderful insight into the intricacies of human biology.

An unusual "skull with ears" sits in the crypt of this small church tucked away at the end of a narrow alley.

The remains of the left arm of the levitating philosopher-saint are kept in a 13th-century Neapolitan basilica.

An eerie, little-known Neapolitan museum filled with preserved human remains.

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

The Neapolitan Cult of the Dead still cares for the skulls at this mini-Fontanelle.

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

An underground paleo-Christian burial site composed of the remains of several cemeteries and Basilicas.

Dug as a secret royal escape route, the tunnel became a wartime bomb shelter and dumping ground for vintage cars.

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

This shining multicolored metro station deep under Naples is said to be the most beautiful in Europe.

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

Life-sized painted illusions let pedestrians blend in with the street art.

At night, this memorial illuminates a ghostly outline of a footbridge that connected two sections of the Warsaw Ghetto.

Atop this library is one of the most beautiful green spaces in Warsaw.

This colorful and quirky set of pegasus sculptures celebrate the works of poet Zbigniew Herbert.

Hundreds of notes give thanks to the patron saint of lost causes.

This enormous 32-foot painting depicts Poland's greatest medieval battle in glorious detail.

A delightful museum entirely dedicated to the tiny homes of dolls.

One of the world's largest collections of medieval religious art.

Order “Proletariat’s Cutlet” at this communist-themed restaurant allegedly once visited by Lenin.

The world’s narrowest house makes for an awkward, four-foot-wide living space.

A national collection of Communist-era musical posters.