- infogalactic.com info/Poznań<templatestyles src="Module:Hatnote/styles.css"></templatestyles>. <templatestyles src="Module:Hatnote/styles.css"></templatestyles>.
- 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).
- ftrc.blog park-cytadela/This first was the main factor in the system named Festung Posen (Fortress Poznan).
- dom-01.web.app dom-car-poznan-ul-polska.htmlPoznan Fortress Wikipedia. Opel Domcar Ul Polska 112 Poznan 2020. Find, Read, And Discover Dom Car Poznan Ul Polska, Such Us
- play.google.com store/apps/details…Fort Poznań. QRTAG aplikacje mobilne. 5.0star. ... Individual sightseeing of Fort VI in the Poznań Fortress.
- hmong.ru wiki/Poznań_Fortress
- dir.md commons.wikimedia.org/wiki/Category:…Poznań Fortress. set of fortifications in the city of Poznań in western Poland.
- fortezza.pl en/about-us/The shelter of the poznań fortress. The soul of a beautiful fortification in modern issue.