Auschwitz was the largest of the Nazi concentration- and extermination camps. The concentration camp complex consisted of Auschwitz I, the main camp or Stammlager, Auschwitz II or Auschwitz-Birkenau, a concentration- and extermination camp, Auschwitz III-Monowitz, the IG-Farben camp and dozens of subcamps. The camps became a major site of the Nazis' Final Solution. Over 1.1 million men, women and children lost their lives in Auschwitz.