Last week we went to Auschwitz-Birkenau. It's an extremely heavy and powerful experience that will change you. Very difficult. Impossible to share. No, I can't touch sharing Auschwitz. I can't even explain my feelings. I know it included legs of heavy lead, a rib cage that refused to lift with breaths and dizziness that made it impossible to comprehend no matter how hard I tried. You should go too. Everyone should.
I don't have words that can touch the place. Perhaps, because none of us will ever really understand. But, words are important. I suggest the memoir Night by Elie Wiesel. It's a powerful account of the year he spent in Auschwitz, the largest death camp.