Mauthausen concentration camp
As Mauthausen produced more, it needed more workers. The Nazis brought more and more prisoners to Mauthausen to work as slave laborers. To make room for more slave workers, the Nazis built additional subcamps (). By the end of World War II, there were 101 camps (including 49 major subcamps) in the Mauthausen complex. In January 1945, these camps held roughly 85,000 inmates.