- lonelyplanet.com poland/wielkopolska/poznan/…Poznań. This large park is laid out on what was once a massive Prussian fortress. The fortress was involved in one major battle, when the Germans defended…
- vk.com wall-97127331_3551?lang=enAlexey Isayev about the storming of the city-fortress Poznan.
- infogalactic.com info/PoznańDue to its strategic location, the Prussian authorities intended to make Poznań into a fortress city, building a ring of defensive fortifications around it.
- hmong.ru wiki/Poznań_Fortress
- http://fact-index.com p/po/poznan.html1816-1914 construction of Poznań Fortress, city area inside the fortifications on both sides of Warta river: 947 ha (9,47 km2).
- traveller-eu.ru poznan-polsaCucina 88 - Wyspiańskiego 26A, 60-751 Poznań. Vine Bridge - Ostrówek 6, 61-122 Poznań. Pierogarnia - Wszystkich Świętych 6, 61-869 Poznań.Bulunamadı: fortress
- britannica.com place/PoznanPoznan, city and capital of Wielkopolskie province, west-central Poland, located on the Warta River near its confluence with the Cybina.Bulunamadı: fortress