The biography of this place is a story about two different buildings connected by the fact that they both witnessed events from the local and world history. One of them is the building of the Prussian military supply depot where the Enigma codebreakers began their battle with ciphers. The other building is the headquarters of the Regional Committee of the Polish United Workers’ Party – the so-called Party’s House – where the events of the Poznań protests in June 1956 and the political transformation of 1989-1990 took place. It was later turned into the seat of the Faculty of History of Adam Mickiewicz University.