Note: I had my first trip to Europe (basically) last summer. We went to 11 cities/towns in Poland and Rome.
I visited the camp. I really "enjoyed" the visit to the camp. It made me want to kill everyone (very slowly) who helped build, run, or support the camp. It was SICK how some German companies had advertised the work they did to build the camp.
I was very impressed that some local Poles had set up volunteer committees to help the victims of the camp, and surprised that the Nazis had let them give aid to the prisoners.