I never managed to go to Auschwitz but I went to Gross-Rosen when I was a kid. Well I wouldn't take kids to such a place as it's been a long time ago, and at 24 I can clearly remember the images of a big bulldozer pushing bodies down to a mass grave. Really disturbing.
It is worth seeing to know what happened there, and maybe find some information about it etc before You go. Don't really understand how some people claim holocaust never happened.
Germans were sic with all the experiments but Russians weren't any better, they just either worked people to death or just left them in the middle of nowhere.
My great grandmother was sent down to Siberia, she had some jewellery and money hidden but there was nothing there, nowhere to go, nothing to buy, just holes in the ground to live in and they were eating nettle soup, basically nettles boiled in water, and that was it.
Probably this all will be forgotten as not a lot of kids are interested in history now.