Our Pick
Posted on @rawstates
Fort Pulaski and the end of masonry
1862
Cockspur Island, Georgia
Jud McCranie, en:user:Bubba73 · CC BY 3.0 · Wikimedia Commons
Considered impregnable, Robert E. Lee helped build it and said you might as well bombard the Rocky Mountains. New rifled cannon breached its seven-foot walls in thirty hours, and every masonry fort in the world was obsolete by the afternoon.
That was 1 of the hidden places.
Location: documented spot
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