[Rick Lee]

I doubt there were any Jews at Dachau after the extermination camps were built and running in the occupied territories. The Nazis didn't want their most hideous crimes visible to the German populace. Whatever Jews were in Dachau were almost certainly shipped off to Poland once things got operational there (which was a good six or seven years after the Nazis started rounding up their political opponents). The Nazi regime ran a huge domestic network of prisons and camps for their own political prisoners and undesirables. Plenty of these remained prison camps even once East Germany was founded. Meet the new boss, same as the old boss.

Auschwitz was actually several camps on the outskirts of Krakow. It was such a huge operation. I can't remember exactly because they were filming Schindler's List when I was there. But I think only the main camp is still there and there's not even that much left to see of that. But you get a sense of the scale of the whole operation. When you read about what happened at Babi Yar and figure the Germans then realized bullets were too expensive to accomplish their goals, you get the picture.

Also, don't forget to visit (the site of in Berlin) or at least read up on the Wansee Conference. That is a very well-documented event, not disputed at all and it's where the top dogs all went on record as to how they planned out the Final Solution. If that doesn't convince someone, nothing will. It also help if you speak and read German, as original documents have a much greater effect than the translations do.