Sobibór was a Nazi German extermination camp located on the outskirts of the village of Sobibór, Lublin Voivodeship of the Nazi German General Government (occupied Poland).
Auschwitz concentration camp was a network of concentration and extermination camps built and operated by the Third Reich in Polish areas annexed by Nazi Germany during World War II. It consisted of Auschwitz I (the base camp); Auschwitz II–Birkenau (the extermination camp); Auschwitz III–Monowitz (a labor camp to staff an IG Farben factory), and 45 satellite camps.
Chełmno extermination camp, known by the Germans as the Kulmhof concentration camp, was a Nazi German extermination camp situated 50 kilometres (31 mi) from Łódź, near a small Polish village called Chełmno nad Nerem
Belzec was the first of the Nazi German extermination camps created for the purpose of implementing the Operation Reinhard – which entailed the murder of some 2.2 million Jews, during the Holocaust.
Treblinka was an extermination camp, built by Nazi Germany in occupied Poland during World War II.