- kk.wikidea.ru wiki/Poznań_FortressO fortyfikacjach miasta Poznania w XIX i XX wieku., Poznań 2006, Wydawnictwo Rawelin, ISBN 83-915340-2-2.
- wiki5.ru wiki/Poznań_FortressO 40fikacjach miasta Poznania w XIX i XX wieku., Познань 2006, Wydawnictwo Rawelin, ISBN 83-915340-2-2.
- ORP Poznań - minelayer-landing ship of Polish Navy. The Poznań - a football supporters' celebration. Poznań Fortress - fortress in Poznań.
- visitpoznan.pl en/poznan-top-10This largest park in Poznań is only a 15-minute walk from the Old Market Square and hides many secrets. It is a relic of a 19th century fortress and the largest...
- planergo.com en/sights/poznan-citadel/Fort Winiary was part of Fortress Poznań (Festung Posen), a system of defensive fortifications around the city built under Prussian rule in the 19th century.
- vamados.com guide/poznan-travel-guide/It was during this time that the last parts of the old walls and gates were torn down and replaced by the Poznan / Festung Posen fortress, which was built from...
- visitpoznan.info en/poznan/poznan-attractions/…From the west to quarter is enclosed by a semicircular line of parks, which replaced the XIX century fortifications of Fortress Poznań.
- github.com RanneKapcie/poznanfortressDjango 1.1 application made for exploring Poznan Fortress with ease. Allows user to view military objects which are a part of Poznan Fortress.
- flickr.com photos/ewitsoe/34527105203Urban Fence. Where every home becomes a fortress. HFF. Join me on my personal website Erik Witsoe or contact me at ewitsoe@gmail.com for cooperation.