This mysterious island simply appeared and then disappeared on Google Maps! We've seen this small piece of land on maps ever since 1876 – when a French ship supposedly discovered it. Sandy Island has been systematically "undiscovered" over the years, but it has yet to be erased completely from all maps. You may even find it on some maps with the label ED – which means "existence doubtful." Are you ready to discover this mysterious place and other unique places around the world?