Interesting.  I have been to several of the camps in Germany, but I have never been to Auschwitz.  It is on my to-do list though, as well as visiting the sites of Treblinka and Sobibor.Holocaust deniers are more to be pitied than debated.  If we debate them then we are giving them implicit academic standing for their wholly unprovable claims.  The fact of the Holocaust has been established without doubt.  The easiest way to stop a Holocaust denier is to ask him where all the Jews went if the Nazi's did not kill them?