Boyen Fortress is a former Prussian fortress located in the western part of Giżycko, in Warmian-Masurian Voivodeship, northeastern Poland. It is situated on a narrow isthmus between two large lakes of the Masurian Lake District, Kisajno and Niegocin.
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Official Website http://www.boyen.gizycko.pl/
Address Turystyczna, Giżycko 11-500, Poland
Coordinates 54°1'55.236" N 21°44'54.907" E
