The Maunsell Sea Forts. During the Second World War, the British Royal Navy constructed a series of sea forts for an advanced line of defense against inbound air raids and potential sea invasions. Now abandoned.
Abandoned Battleship Island, Japan housed what it should have with obscenely crowded apartments like this. Now, entire island is abandoned & restricted to the public. These derelict sky-scraping ghettos fall without an ear to hear them.