High in the Alpine foothills of Germany stands one of the world's most iconic castles—with a dark backstory to contrast its fairy-tale setting http://on.natgeo.com/2BI19F3

High in the Alpine foothills of Germany stands one of the world's most iconic castles—with a dark backstory to contrast its fairy-tale setting http://on.natgeo.com/2BI19F3 

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