The Radogoszcz Prison Museum marks one of the most harrowing sites in a city that saw extraordinary suffering during the Second World War. The factory building was used by the German occupiers as a prison, holding Polish political prisoners and members of the resistance. Today the ruins of the burned-out building, preserved as found, house a memorial and exhibition about the prison and its victims.
It is not an easy visit, but it is an important one for understanding what the occupation of Łódź — which the Germans renamed Litzmannstadt — actually meant for the people who lived through it. The memorial is in the northern part of the city, some distance from the centre, but reachable by tram.