Of course, the quantity is hard to say. There must be many major concentration camps built by Nazi Germany: Auschwitz, Dachau, Saxony Hausen, Buchenwald, Brendonk, Ravensbrook Women's Concentration Camp, Belgen-Balzen Concentration Camp and Mauthausen Concentration Camp. Auschwitz concentration camp Auschwitz concentration camp was the largest concentration camp built by Nazi Germany during World War II. Founded in April of 1940, it is the general name of more than 40 concentration camps near Auschwitz, more than 300 kilometers away from Warsaw, Poland. The German Nazis imprisoned millions of people here and slaughtered 165438+ ten thousand of them. Most of the victims were Jews. 1945 65438+1On October 27th, the Soviet Red Army liberated Auschwitz concentration camp, and 7,000 survivors were reborn. Dachau concentration camp Dachau concentration camp is located about 80 kilometers northwest of Munich, Germany. Built in 1933 and expanded in 1938. It was the first concentration camp built by Nazi Germany and was once used as a teaching base for training SS officers in concentration camps. There were 265,438+/kloc-0,000 prisoners here, including many Jewish civilians and Soviet prisoners of war, and nearly 32,000 of them were persecuted to death or shot. 1On April 29th, 945, the concentration camp was liberated and more than 30,000 detainees were freed. Saxon Hausen concentration camp Saxon Hausen concentration camp is located near the German capital Berlin. It was the headquarters of Nazi concentration camps in German-occupied areas during World War II. The concentration camp covers an area of 400 hectares and its overall layout is triangular. It was designed and built according to the requirements of Himmler, the leader of the Nazi SS, and is considered to be the most "modern" concentration camp. From the establishment of 1936 to the liberation of 1945 on April 22, there were more than 200,000 producers, social Democrats, resistance fighters, Jews, Gypsies and Soviet prisoners of war from all over Europe, half of whom died of hard labor, illness or were shot and burned to death. Buchenwald concentration camp Buchenwald concentration camp was built in 1937 near Weimar, an eastern German city. During World War II, about 250,000 people were imprisoned here, of which 56,000 were killed by the Nazis in various ways, including the rostrum of the German Production Party. In the concentration camp, a group of anti-fascist fighters, led by German producers, have always insisted on fighting the Nazis and secretly planned to win their freedom through armed uprising. 1945 in April, they launched an armed uprising, took control of the concentration camp in less than a day, and liberated nearly 2 1000 people. Brendonk concentration camp The Brendonk concentration camp in Belgium, known as "Auschwitz" in Western Europe, is located 20 kilometers north of Brussels. Originally a fortress in Belgium during World War I, it became a concentration camp in Nazi Germany during World War II. This is a hell on earth, where Jews and armed resistance are detained, persecuted and abused. Ravensbrook Women's Concentration Camp Ravensbrook Women's Concentration Camp was built between 1938 and 1939, 50 miles north of Berlin. During World War II,133,000 women, children and teenagers were imprisoned here. They are forced to do heavy physical labor such as road building, and some women are used for medical experiments. 1945 Before the Soviet Red Army liberated here, about 50,000 people were persecuted to death. Belgen-Balcen concentration camp Belgen-Balcen concentration camp was established in 1940, and was liberated by the British army in April 1945. During the five years of the existence of the concentration camp, the German Nazis killed about 70,000 detainees here. & gt& gt& gt Mauthausen concentration camp Nazi Germany annexed Austria in March 1938. Mauthausen concentration camp, founded in August 1938, is the main concentration camp where Nazi Germany persecuted Jews, anti-fascists and innocent civilians in Austria. This concentration camp and 49 affiliated concentration camps in other Austrian areas imprisoned 200,000 people, and 654.38+10,000 people were persecuted to death, at least 5 of whom were from China. On May 1 1, 2003, the unveiling ceremony of the memorial hall for the victims in China was held in the former site of Mauthausen concentration camp. The dark marble monument is engraved with the words "in memory of the victims in China". Brendonk concentration camp Brendonk concentration camp is located 20 kilometers north of Brussels, the capital of Belgium. Originally a fortress in Belgium during World War I, it became a concentration camp in Nazi Germany during World War II. This is a hell on earth, where Jews and armed resistance are detained, persecuted and abused. During the four years from 1940 to 1944, 164 people were shot, 2 1 people were hanged and about 100 people were tortured to death.