Original: PoznaÅ Fortress, known in German as Festung Posen (Polish: Twierdza PoznaÅ) was a set of fortifications in the city of PoznaÅ (German: Posen) in western Poland, built under Prussian rule in the 19th and early 20th centuries.
Simplified: PoznaÅ Fortress (in Polish: Twierdza PoznaÅ, in German: Festung Posen) was a set of fortifications in the city of PoznaÅ in western Poland, built under Prussian rule in the 19th and early 20th centuries.