Learn about the Facts About Auschwitz as you carefully tread the grounds of the Holocaust. The name itself brings to mind the jarring and terrifying images of the incident. The Auschwitz Prisoners were mostly the Jews of the community as well as Polish. There were around six concentration and extermination camps that were registered as  UNESCO World Heritage Sites in 1979. The very first concentration camp of Dachau was opened in 1933 and the Auschwitz Prisoners were considered ündesireable elements. The site actually consists of two parts of the old camp-Auschwitz and Birkenau.