A former major munitions plant that has been converted into a sprawling art space.

The rogue roots are gradually consuming some of the historic marble grave markers.

A local landmark with generations of spraypainted messages, and more being added each day.

A former hospital is now home to a pizza parlor and maybe a few ghosts.

This Roman amphitheatre was also the location of the first gladiator school.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

This amazingly well-preserved villa just outside Pompeii boasts rare examples of ancient Roman paintings.

The walls and streets of the ancient city are peppered with penises.

Gods clash with machines in a power plant regenerated as a museum.

Erotic art covers the walls of the largest ancient pleasure palace.

Ancient snack bar of the Roman Empire re-opened.

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

This Roman arch marks the location of an ancient gate at one of the Seven Hills of Rome.

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

2300-year-old Roman road connecting the empire.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

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

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

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

Italy's third-largest Roman arena gives a peek into the underground operations beneath the ancient spectacles.

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

The first museum in the world devoted to sexual gadgetry.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Macabre astrological automaton clock dating to the late 1400s.