Festungshaft
Festungshaft (English: fortress confinement; Latin: custodia honesta, lit. 'honorary custody') was a privileged custodial sentence in Germany from the 16th century until 1970. It also existed in some neighbouring territories and states.
Fortress confinement was a sentence which was generally seen as not conferring dishonour; it granted the sentenced person wide-ranging liberties, and carried no obligation to penal labour.
Notable prisoners in fortress confinement include August Bebel, Adolf Hitler, Karl Liebknecht and Werner von Siemens.