Following completion of the building in the late 1930s, it was rented to the German Embassy in Rome and initially used as that embassy's Cultural Office. The headquarters of the
Sicherheitspolizei (SiPo), an agency of the SS, led by
Herbert Kappler, were established there from 11 September 1943 and occupied the building until the German retreat from Rome. Under Kappler it was transformed into a prison, with the rooms being turned into cells. In January 1944 all windows were walled up to facilitate imprisonment, interrogations and torture of some of the most important figures of the Italian resistance, with an estimated 2000 people passing through the building. On 4 June 1944, the day of the
Liberation of Rome, the population entered the building and freed those prisoners who had not been taken and subsequently murdered by the retreating SS. Following donation of the apartments occupied by the SS to the Italian State in 1950 the museum was established to record the period of German occupation and Rome's subsequent liberation. The donation, by Princess Josepha Ruspoli in Savorgnan di Brazzà, specifically required the rooms to be used as a museum for that purpose. After an initial opening of a few rooms in 1955 by the Italian President
Giovanni Gronchi, it was definitively opened in 1957. Sources of materials for the exhibition included
Gestapo files and documents provided by the people of Rome, particularly those associated with the resistance. In 2007, the nearby metro station of Manzoni was renamed
Manzoni - Museo della Liberazione in honour of the museum. == The museum ==