Hashima Island lies nine miles off the port of Nagasaki, Japan. Between the seawall which encircles the small island and the abandoned apartment blocks rising from it, many think that it looks like a battleship, earning the nickname, Gunkanjima, or “Battleship Island.” The tiny island was once the most densely populated spot on the globe with 5,259 residents living and working on only 16 acres. For the last 40 years, it has been abandoned and uninhabited, a ghost island, its concrete towers slowly crumbling into the sea. In July 2015, after some controversy, the island was formally approved as a UNESCO World Heritage site.
Beginning in 1887, when a rich deposit of coal was discovered, the island was turned into a large coal mine. Mineshafts reached deep beneath the sea while the apartment buildings for the miners rose skyward on the island above. Mitsubishi purchased the islands and built nine-story apartment buildings, the first large concrete buildings in Japan.