The site in Niederkirchnerstraße, which became known as the Topografie des Terrors (Topography of Terror) in 1987, was home to the main institutions of National Socialist terror between 1933 and 1945. The Reichsführung-SS (SS Main Office), the Sicherheitsdienst (SD), the Geheime Staatspolizeiamt (Gestapo) including the prison and the Reichssicherheitshauptamt (Reich Security Main Office) were located on the site near Potsdamer Platz. Today, the site is a place of remembrance that contributes to coming to terms with the terror regime with its permanent exhibitions as well as its educational and event program.