Auschwitz Birkenau is the biggest concentration camp of the Third Reich which Germans established on polish lands. It is the symbol of people’s cruelty where 1,5 million poeple: Jewish, Polish, Russians and Roms lost their lives in inhumane conditions. Idea of holocaust born in the head of Adolf Hitler assumed the death of enemmies of german race using gas chambers on the mass scale. Auschwitz Birkenau was created in 1947 as a symbol of genocide and the warning to not allow to happen similar tragedy again.