Poveglia Plague Island, Venice, Italy

This tiny island lies half a mile from the city of Venice and was originally used as a quarantine station during the plague in the 18th century. Historians believe more than 160,000 plague-infected people lived out the remainder of their days here. Due to the nature of the island, many believe it to be haunted and while paranormal investigators would love to visit the island, it is currently off-limits to visitors.