This ruined folly was originally built to honor a failed American state that would have become "Westsylvania."

This shell of a historic manor house on the Isle of Wight is said to be the most haunted site on the island.

The UK's oldest theme park slowly slips away.

One of the largest caves in the world open to the public.

This massive subterranean fissure is known as the "underground Grand Canyon."

These pools have been abandoned for over 20 years.

During World War II, this rice mill became a Nazi concentration camp.

The Cathedral of St. Ambrose has been hiding a special parishioner within its walls.

A collection of collections, including an anatomy museum, the “Cabinet of Physics of Alessandro Volta, a museum of natural history, mineral collection, and much much more...

The mark of the Devil's horns on a marble column in Milan.

Remnants of cone-shaped fascist bomb shelters in Milan.

This giant middle finger statue sends an unambiguous message to Italy's bankers.

Before there were doorbells this bronze ear was installed for visitors to announce their arrival.

Long-abandoned art nouveau baths beneath Milan's Piazza Oberdan.