Below are pics if Birkenau.there could have been many more pictures but I wasn’t sure so wanted to document all that horror. Our guide told us Auschwitz housed 20,000 and Birkenau 120,000. At the end of the war The Germans blew up the crematoriums and tried to erase the existence of the camps. She also said they are only preserving what remains not doing a restoration. Then back to Krakow for a waking tour. Also the 2 camps are only two of the many that were in existence.