Spandau Citadel, built in 1594, the 1848 St. Marien am Behnitz Catholic church designed by August Soller, and Spandau arsenal, Germany's arms development center until 1919, now a museum. That arsenal's Spandau machine gun inspired the slang "Spandau Ballet" to describe dying soldiers on barbed wire during the First World War, and later was applied to the appearance of Nazi war criminals hanged at Spandau Prison. The notorious prison, built in 1876, held Nazi war criminals after World War II until 1987, when it was demolished after the death of the last surviving prisoner, Rudolf Hess. In 1979, the English New
Finnish Civil War prison camps but only 113 were executed, as it was possible to plea for mercy. The notorious Estonian-born war criminal Hans Kalm alone was responsible of more than 500 executions at the Hennala prison camp in Lahti. At least 200 of his victims were women and the youngest of them were only 14 years old. 104 of the 1,482 children held in prison camps died. Most of them died of starvation or disease but some 20 were executed, the youngest being only 9-year-old boy. Conditions in the camps were terrible, general hygiene was bad and there was a lack of food supplies