- O 40fikacjach miasta Poznania w XIX i XX wieku., Познань 2006, Wydawnictwo Rawelin, ISBN 83-915340-2-2.
- ...book in the beautiful series of books about fortifications / fortresses (mostly 19th & 20th century) in Poland, all made by Tomasz Kowalski c.s. - Fortress Poznan.
- March, 1945 Poznan city and fortress destroyed by Soviet aviation units (removed from the air).
- This is the seventh annual celebration of Poznan Fortress Days, which occurred on August 24- 25 and highlighted over 20 different locations and attractions...
- Urban 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.
- Due to its strategic location, the Prussian authorities intended to make Poznań into a fortress city, building a ring of defensive fortifications around it.
- Poznań Fortress Days is an annual event organized by the Poznań Local Tourist Organization together with partners.
- Remains of the so-called Dom Schleuse (interior view). literature. Hugo Sommer: The Poznan fortress and its Prussian commanders .