This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Festung Aarburg. Lageplan der Festung Aarburg Entwurf own original text selbst erstellt selbst erstellt PDrelease Original upload log de Boteas CommonsHelper page de FestungAarburg Voyager bytes no Andere Versionen Festung Aarburg Karte
Page 2023 Free-images.com. All images are Public Domain