- wikidata.org wiki/Q50127dawiki Fæstningen Poznań. dewiki Festung Posen. elwiki Φρούριο του Πόζναν. enwiki Poznań Fortress. eswiki Fortaleza de Poznan (Polonia).
- http://poznan.travel en/r/wydarzenia/tylko-w-poznaniuMore information. 3. Poznań Fortress Days. Dni Twierdzy Poznań. When? August How long? One weekend Where? Throughout the city.
- OpenTripMap.com en/card/Q50127Poznań Fortress, known in German as Festung Posen (Polish: Twierdza Poznań) was a set of fortifications in the city of Poznań (German: Posen) in western...
- en-academic.com dic.nsf/enwiki/14420Due to its strategic location, the Prussian authorities intended to make Poznań into a fortress city, building a ring of defensive fortifications around it.
- its-poland.com attraction/poznan-fortress-daysPoznań Fortress Days is an annual event organized by the Poznań Local Tourist Organization together with partners.
- fallingrain.com world/PL/86/Poznan.htmlEstimated population (from Openstreetmap): 548028. Wikipedia: http://en.wikipedia.org/wiki/Poznań. ... Poznań Fortress.
- latitude.to satellite-map/pl/poland/93372/poznan-…Poznań Fortress, known in German as Festung Posen (Polish: Twierdza Poznań) was a set of fortifications in the city of Poznań (German: Posen) in western P…
- tripswithkids.eu fort-va-poznan/We went with the children to visit one of the buildings Fortress Poznan. Particular object was a fort Va "Zwischenwerk Bonin" located at Lechicka Street.