built from 1873 to 1876, that was used by the Soviet administration from 1945 to 1949 and the Stasi from 1958 until 1989 to hold political prisoners. Between 1950 and 1958 the Stasi shared another prison with the civil police. The prison at Moritzplatz was used by the Volkspolizei from 1952 until 1958. Between 1945 and 1989, more than 10,000 political prisoners were held in the prison. The memorial site and museum was founded in December 1990. Potsdam The memorial site and museum at Lindenstraße 54/55 in Potsdam, examines political persecution in the Nazi, Soviet occupation and GDR eras. The original building was built 1733-1737 as a baroque palace; it became a court and prison in 1820. From 1933, the Nazi regime held political prisoners there, many of whom were arrested for racial reasons, for example Jews who refused to wear the yellow star on their clothing. The Soviet administration took over the prison in 1945, also using it as a prison for holding political prisoners on remand. The Stasi then used it as a remand prison, mainly for political prisoners from 1952 until 1989. Over 6,000 people were held in the prison by the Stasi during that time. On 27 October 1989, the prison freed all political prisoners due to a nationwide amnesty. On 5 December 1989, the Stasi Headquarters in Potsdam and the Lindenstrasse Prison were occupied by protesters. From January 1990 the building was used as offices for various citizens initiatives and new political groups, such as the Neue Forum. The building was opened to the public from 20 January 1990 and people were taken on tours of the site. It officially became a Memorial site in 1995. Rostock - The memorial site is in a former Stasi remand prison at Hermanstrasse 34b. It is on what was part of a Stasi compound in Rostock, where its district headquarters were also located. Most of the site is now used by the Rostock county court and the University of Rostock. The complex was built 1958–1960. The remand prison was used by the Stasi from 1960 until 1989. About 4,900 people were held in the prison during that time, most of them were political prisoners. Most of prisoners were released after an amnesty issued on 27 October 1989. The Stasi prison in the Rostock compound was occupied by protesters on 4 December 1989 following a wave of such occupation