North Sentinel Island
This portion of the Andaman Islands is home to an indigenous group of Sentinelese. If foreigners attempt to sneak a peak, they are met with spears at the coastline. One of the last remaining tribes on earth that is completely untouched by modern civilization, the Sentinelese want to keep it that way. India had administered the island as part of the Andaman and Nicobar Islands Union Territory in 1947. But no treaties were signed, so the island remains in limbo.