Gunkanjima is an abandoned island located in Nagasaki Prefecture. The island got famous because of his unbelievable appearance: surrounded by a sea wall, you will find an entire abandoned city with huge concrete buildings. The original name of the island is actually Hashima, but it is also called the Battleship Island (translation of Gunkanjima) or the Ghost Island. It appeared recently in the James Bond movie Skyfall and got even more famous. The story of my exploration is on http://offbeatjapan.org/gunkanjima.