Crohy Head Signal Tower: There are quite a few signal towers on the Donegal coast, with this one overlooking Aranmore Island in the background. Most of the signal towers, around 80 of them stretching all around the country, were built in the early 1800s as observation posts after French forces tried to land in the late 1790s. Most were decommissioned almost as soon as they were built, although some were re-commissioned again during the war of 1812 which was between the US and Britain, when American privateers operated off the west coast.
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