tbi - Inchmickery

Inchmickery is tiny, only 100 metres by 200 metres, currently uninhabited and a RSPB preserve, mainly for seabirds [which used to include the rare roseate terns]. During both WWI and WW2 the island was used as a gun emplacement. it is no accident that the concrete buildings make the island look (from a distance) like a battleship.
That's Edinburgh in the background.
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en.wikipedia.org/wiki/Inchmickery