During the Nazi German occupation and later, under the communist rule, it was a place of detention, torture and execution of the Polish political opposition and underground fighters.
The Mokotów prison was built in early 20th century by the Russian forces, and was used by security and criminal police of Warsaw (see also: Tsarist Citadel in the Żoliborz district).
After Poland regained her independence in 1918, the site was refurbished, and, until World War II, served as the main prison facility of the Polish attorney general's office.
It housed Polish politicians, freedom fighters, resistance workers and ordinary people caught in łapankas on the streets of Warsaw.
[3] Among those held there were German war criminals such as Jürgen Stroop, but also the members of the Polish underground, democratic opposition and intelligentsia, who were considered a threat to the regime of the Soviet-controlled communist government of Poland.