Interiour view from one of the still standing prisoner barack of this WW II

extermination camp .

Many people know the Birkenau camp simply as "Auschwitz"; it was larger than Auschwitz I, and more people passed through its gates than did those of Auschwitz I. It was the site of imprisonment of hundreds of thousands, and of the killing of over one million people, mainly Jews but also large numbers of Poles, and Gypsies, mostly through gassing.