Memorial Berlin-Hohenschönhausen

The Berlin-Hohenschönhausen Memorial is a museum and memorial located in Berlin's north-eastern Lichtenberg district in the locality of Alt-Hohenschönhausen, part of the former borough of Hohenschönhausen. It was opened in 1994 on the site of the main political prison of the former East German Communist Ministry of State Security, the Stasi.

Unlike many other government and military institutions in East Germany, Hohenschönhausen prison was not stormed by demonstrators after the fall of the Berlin Wall, allowing prison authorities to destroy evidence of the prison's functions and history. Because of this, today's knowledge of the functioning of the prison comes mainly from eye-witness accounts and documents sourced from other East German institutions.

Source: Wikipedia