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
Inert gas asphyxiation accidental death in humans, inert gas asphyxia with gases including helium, nitrogen, methane and argon has been used as a suicide method. Inert gas asphyxia has been advocated by proponents of euthanasia, using a gas-retaining plastic hood device colloquially referred to as a suicide bag. Nitrogen asphyxiation has been suggested by a number of lawmakers and other advocates as a more humane way to carry out capital punishment. In April 2015, the Oklahoma Governor Mary Fallin signed a bill authorizing nitrogen asphyxiation as an alternative execution method in cases where the state's preferred method of lethal injection was not available