This water reservoir situated in South Carolina has a shape of Christmas tree and can be seen as a completely blurry patch on the Google maps. Many believe that is, in fact, an Oconee Nuclear station which is also called American Fukushima.
12. Unknown Area In Siberian Tundra, Russia
Compared to all the secretive places on the Google maps this is one of the most mysterious ones. This place is situated in the Tundra region near the border of Alaska. The Russian authorities carried out sealing many cities and small towns during 1986 which were homes to a million of people. These cities were given very mysterious names like Tomsk-7 and Krasnoyarsk-26 or Arzamas-16. Arzamas-16 was the colony comprising of the nuclear scientists and engineers. It is believed by many that this was taken up by the government and was used as the radar and missile station during the cold war.