Abandoned City
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Hashima Island (Gunkanjima)
Hashima Island, commonly known as Gunkanjima ('Battleship Island') due to its distinct armored warship silhouette, is an abandoned offshore coal-mining island city located 15 kilometers from Nagasaki. Purchased by Mitsubishi in 1890, the tiny 6.3-hectare island became the most densely populated place on Earth, packing over 5,300 residents into reinforced concrete apartment blocks. Abandoned overnight in 1974 when coal mines closed, Gunkanjima stands today as a haunting World Heritage ruin.