Abandoned cemetery of the former Psychiatric Hospital of Volterra.

A gorgeous example of 13th-century Gothic architecture.

A medieval, mosaic-lined baptistry built by a heretical Christian sect.

These elaborate gothic monuments honor Verona's medieval lords.

Built on a medieval synagogue, this church has a burial crypt, tunnel system, and Jewish ritual bath hiding deep underneath.

Despite their macabre past, these hooks are said to bring good luck to those who touch them.

This old medieval prison tower has been a site of astronomical research for more than 250 years.

Psychoanalyst Carl Jung reported a paranormal experience after visiting this mosaic-lined Roman baptistry.

This amazing medieval fortress stands atop a promontory along the famous Cinque Terre.

This 6th-century church has the largest and best-preserved collection of Byzantine mosaics outside Constantinople.

Fountain where visitors can earn a license to be mad.

Not far from the more famous House of Juliet, visitors will find the supposed residence of her lover.

An incredible mosaic-lined monument said to have held the remains of an ancient Roman empress.

This deconsecrated church has seen many uses, from a tobacco storehouse to a cinema.

An abandoned quarry hides an open-air gallery of huge sculptures, some made from the rubble of 9/11.

An ancient Roman temple first dedicated to an emperor's wife is now a church.

A whale rib was used to advertise the store by the arch that offered exotic goods from far away.

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

Built to repay the sins of the father, this church is home to one of the most valuable works of Western art.

Explore the quarry where the marble was sourced for Michaelangelo's David.

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

A cave in southern Italy adorned with thousand-year-old Biblical frescoes existed in obscurity until fairly recently.

Skulls and skeletons are omnipresent in this church dedicated to souls trapped in purgatory.

One man's quest to fix his toilet unearthed over 5,000 artifacts spanning more than 2,000 years of history.