The Museum for Wielkopolska Martyrs - Fort VII. is housed in the historical Fort VII Colomb. The museum is in charge of documents describing the martyrdom of people living in Wielkopolska during the Nazi occupation. It collects all kinds of exhibits dating back to that period. This collection includes a rich volume of letters written in the camp, drawings, photos, prisoners' personal documents, documents issued by the German occupying authorities, and various objects that the prisoners used every day, e.g. medallions made of bread, wallets, dictionaries, and rosaries. The museum also keeps archives of prisoners' accounts, and collects personal files describing the lives of people who found themselves in Fort VII. The records, now containing ca. 5000 files, mostly with photographs of prisoners, are a source of significant historical information.