Oranienburg was an early Nazi concentration camp, one of the first detention facilities established by the Nazis in the state of Prussia when they gained power in 1933.
[1][2] It was established in the center of the town of Oranienburg on the main road to Berlin when the SA took over a disused brewery grounds.
Prisoners were marched through the town to perform forced labour on behalf of the local council.
[1] The prison was taken over by the SS on 4 July 1934, when the SA was suppressed by the regime.
It was closed and subsequently replaced in the area by Sachsenhausen concentration camp in 1936.