British historian David Irving, who was jailed for questioning the Holocaust in a book published in Austria, said Friday that the Auschwitz death camp was a tourist attraction, and added that there was no proof that it ever had gas chambers. Irving, whose comments during an interview with Italy's Sky TG24 News were immediately picked up by Italian news agencies, said there was no doubt the Nazis killed millions of Jews, but said the killings did not take place at Auschwitz. "At Auschwitz they did not have gas chambers, or at least there is no proof that I am satisfied...