Built by the patron saint of illusionists this Elizabethan manor house is riddled with secret cubbies for hiding priests.

Near Birmingham, England three and a half miles of top-secret tunnels housed a World War II “shadow factory” and a Cold War nuclear bunker.

A dilapidated psychiatric facility on the outskirts of Milan where electroconvulsive therapy was developed and Napoleon once lived.

This entire town moved to a safe location after it was devastated by an earthquake, but the remains of the original town are still around.

A formerly opulent Italian village is now a crumbling ghost town that no one really knows what to do with.

Two planes stand abandoned after the closure of an aircraft-themed restaurant.

This stately palace, first built in the 16th century, was converted into a prison in 1830.

A former mining village that now operates as an open-air museum.

This archaeological site built into a tuff outcrop is filled with rock dwellings, the ruins of a medieval castle, and a necropolis.

An abandoned building that once tightened a power line that stretched across Messina Strait.

Though an earthquake destroyed this village in 1980, one former resident still walks its streets every day.

A massive bridge forms part of an aqueduct that was deemed an architectural wonder of its time.

An abandoned village, frozen in time by the threat of a landslide.

Built to be the ideal penitentiary, this abandoned panopticon saw several revolts and even a prisoners' coup.

Abandoned village in Sicily built during the agricultural reforms of Mussolini.

Italy's curious field of mud volcanoes is named for being both gross AND salty.

These pools have been abandoned for over 20 years.

The now-abandoned Fascist summer colony served a dark purpose during World War II.

An abandoned 17th-century baroque hunting lodge with a wonderfully strange architectural plan.

Mysterious tombstones thought to be remnants of Atlantis.

A dreamlike medieval church dug into the tuff rock, with unusual carvings and possible traces of the Templar knights.

Largest necropolis in the Mediterranean.

The ruins of an abbey believed to have been founded by Charlemagne in the 9th century.

Naturally preserved bodies are eerily staged throughout the crypt in varying poses.