Once serving as a psychiatric facility and a quarantine zone for people suffering from the plague, it isn’t hard to believe that paranormal investigators would call Poveglia haunted. With thousands of people likely losing their lives there over centuries, many are convinced their spirits still lurk around the island. Despite the locals disputing claims that it’s haunted, Poveglia remains closed to the public; however, curious visitors can still catch a glimpse of the island from boats.