Hashima Island, Nagasaki Prefecture, Japan

As petroleum replaced coal in Japan in the 1960s, coal mines began shutting down all over the country, and Hashima's mines were no exception. Mitsubishi officially announced the closing of the mine in 1974, and today it is empty and bare, which is why it is called Ghost Island. Travel to Hashima was re-opened on April 22, 2009 after 35 years of closure.
Etymology
Battleship Island is an English translation of the Japanese nickname for Hashima Island, Gunkanjima (gunkan meaning battleship, jima being the rendaku form of shima, meaning island). The island's nickname came from its apparent resemblance to the Japanese battleship Tosa (so much so, in fact, it was torpedoed by the American Navy during World War II). It also is known as the Ghost Island.