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

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

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

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

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

This magical-looking island is notorious for the misfortunes suffered by its owners.

Harlequin costumes, signed scripts, and armor-wearing puppets.

An unremarkable wooden wheel built into the side of one of Rome's oldest hospitals was part of a policy to reduce infant exposure.

If you want to talk to the Pope you will have to stare down this surreal vision of Jesus rising from a nuclear hell.

An 18th-century post box used to alert the church of sick and ailing foreign pilgrims.

This basilica is dedicated to two saints, one of which is known more for his famous quote.

A burial vault located under Tiber Island in the middle of the Italian capital.

A colorful, century-old cemetery of the Yaqui Indian Tribe hidden amid the suburban sprawl of Tempe, Arizona.

This hydrochronometer was invented by a Dominican monk and is a prime feature in this garden.

An 18th century fountain and two columns are all that remains of Rome's forgotten river harbor.

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

A magnificent waterfall is also home to the remains of a Roman hydraulic engineering system.

This subterranean shrine beneath a bike rental store celebrates the iconic Italian scooter.

A wunderkammer of curious objects and intriguing art nestled within a hub of ancient Roman sites.

Rome's ancient Etruscan rival, now a park full of ruins.

One of the most important yet well-hidden museums dedicated to the history of medicine.

This hill made entirely of ancient Roman jars was simply a garbage dump to the people of the time.

Mexico's largest collection of masks is found in the ruins of an abandoned convent.

A former squatter's paradise outside Prague.