Memorial and Museum Auschwitz is one of the saddest and by many the scariest places on earth. Between 1940 and 1945, more than 1.1 million people, mostly Jews, Roma, and Poles, lost their lives in Auschwitz and Birkenau. These concentration camps have become synonymous with the Holocaust, the greatest crime against humanity in the recent history of civilization. The complex has been under state protection since the end of the war and officially became the Memorial Complex in 1947 when Poland was under the administration of the Stalinist Soviet Union. The settings about the suffering of detainees in these camps can be viewed with a guide or a written brochure, and the tour includes a short documentary made during the Soviet liberation of Auschwitz in 1945, although watching this film is not recommended for sensitive children under 14.