Question: where are most concentration camps located?
Answer: Auschwitz-Birkenau, Poland. The most famous and largest of all Nazi camps because of its size and the large number of lives lost within the walls of this death camp.
Belzec, Poland. ... 
Bergen-Belsen, Germany. ... 
Buchenwald, Germany. ... 
Chelmno, Poland. ... 
Dachau, Germany. ... 
Flossenburg, Germany. ... 
Gross-Rosen, Poland.