- en.wikipedia.org Poznań FortressRemains of the Cathedral Lock (Dom Schleuse), part of the original inner ring of defences. Fort III, one of the outer ring of forts built in the late 19th century.
- kocham-poznan.fandom.com wiki/Fortress_PoznańFortress Poznań is the third largest collection of fortications in Europe. The fortress was built in the 19th Century being started by Karl von Grolman...
- inyourpocket.com poznan/poznans-forts_73834fUnfortunately, despite being considered a major asset by Poznań, and even arranged into an official ‘Fortress Route’, on the whole frustratingly little has been done...
- tracesofwar.com sights/11555/Festung-Posen---Fort…Fort I was a component of fortress Poznań and is constructed in the period 1878 - 1888.
- foursquare.com cityofpoznan/list/twierdza-poznań…XIX-wieczny Poznań był potężną twierdzą, dzięki jednemu z największych systemów fortyfikacji w Europie.
- 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...
- visitpoznan.info en/poznan/history/The fortified settlement and Poznań of the first PiastsThe history of Poznań, as in the case of the majority of old towns, began with water.
- 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.
- panopro.cz en/reference/pevnost-poznani/Fortress of Knowledge. See also other references.
- facebook.com DniTwierdzyPoznan/4,036 likes · 16 talking about this · 88 were here. Doroczne święto poznańskich miłośników historii i fortyfikacji.
- commons.wikimedia.org wiki/Category:Twierdza_…...Φρούριο του Πόζναν; Festung Posen; Fortaleza de Poznań; Poznań Fortress; دژ پوزنان; 波兹南要塞; Fæstningen Poznań; Fortăreața Poznań; ポーゼン...
- wikidata.org wiki/Q50127set of fortifications in the city of Poznań in western Poland.
- tripswithkids.eu fort-va-poznan/We went with the children to visit one of the buildings Fortress Poznan.
- arrivalguides.com en/Travelguide/POZNAN/events/…Poznań Tourist Organisation with partners invites to the Poznań Fortress Days, which are held every year at the end of August.