4. North Sentinel Island, India
The natives on North Sentinel Island in the Bay of Bengal near India have aggressively protected their isolation on this island for 60,000 years. The Sentinelese people refuse communication with outsiders and quickly kill anyone who attempts it. The Indian Coast Guard makes occasional flyovers to estimate the population (which has fallen in recent years) or to determine if the community needs help, as after the 2004 tsunami.
The Indian government prohibits interference with the Sentinelese but the island was recently thrust into the media when a young missionary snuck onto the island in an attempt to bring Jesus to the residents. At last sighting, the tribe was dragging his arrow-riddled body across the sand.
5. Poveglia, Italy
Today this small Italian island is abandoned, but it has a sinister history that has led the government to ban visitation. Located between Venice and Lido in Northern Italy, Poveglia was once used as a quarantine area in the 14th century to abandon people with the Bubonic Plague. Then in the 19th century, Poveglia was an asylum for mentally ill people. Rumor has it that a cruel doctor performed agonizing experiments on his patients.
The island is abandoned today, but it is rumored to be haunted by the ghosts of the tortured souls who died there. It is considered the most haunted place in all of Italy, and both tourists and locals are banned from visiting. However, if you really want to brave it, you can complete a lengthy paperwork process for a permit.