The Kammergericht (KG) is the Oberlandesgericht, the highest state court, for the city-state of Berlin, Germany. As an ordinary court according to the German Courts Constitution Act (Gerichtsverfassungsgesetz), it deals with criminal and civil cases, superior to the local Amtsgerichte and the Landgericht Berlin. Its name differs from other state courts for historic reasons; it is the only court called Kammergericht in Germany.
As the appellate court of Brandenburg-Prussia and the Kingdom of Prussia from 1701, it was since 1698 based in the central Cölln quarter of Berlin. In 1735, under the rule of King Frederick William I, it moved to the newly erected BaroqueCollegienhaus in the Friedrichstadt district (in present-day Kreuzberg). It then housed the supreme courts and judges of the different territories ruled in personal union by the royal House of Hohenzollern, without formally merging the different juridical systems. By that concentration in one locality, the later unification of the juridical systems was prepared. The Collegienhaus is today part of the Jewish Museum Berlin.
In 1913, it moved to its present location in a newly erected Neo-Baroque building in the former Botanical Garden, laid out by Johann Sigismund Elsholtz in 1679, which had been relocated to the Dahlem and Lichterfelde in 1898. The premises in the present-day Schöneberg district were renamed Heinrich-von-Kleist-Park on the occasion of the hundredths anniversary of the death of Heinrich von Kleist on 21 November 1911. It became colloquially known as Kleistpark.
In August 1944 the Kleistpark building was the site of the show trial conducted by the People's Court (Volksgerichtshof) under Judge Roland Freisler against the surviving conspirators of the 20 July plot. 9 months later, the Allied Control Council began using the building. On 18 October 1945, the International Military Tribunal (IMT) of the Nuremberg trials held its constituent meeting here.
The building remained the official seat of the council, though its meeting discontinued after the Soviet representatives left in protest in March 1948. On 3 September 1971, the Four Power Agreement on Berlin was signed here. The Kammergericht was based at the former Reichskriegsgericht in Charlottenburg during the Cold War era, until it moved back to its former location in 1997.
