For ever let this place be a cry of despair and a warning to humanity. Where the Nazis murdered about one and a half million men, women, and children, mainly Jews from various countries of Europe.
I do not have many words for Auschwitz-Birkenau, except that you should see for yourself. Most people don’t return to this place, one visit is enough.
In Krakow, traces and witnesses of Jewish life are most prominent in the former Jewish quarter of Kasimierz, nowadays a young, alternative part of the city with lots of small cafés and bars.
On a happier note, Krakow has a lovely Old Town that did not get destroyed during WWII (unlike Warsaw). The market square is pretty amazing with a market hall in the middle of the square. Great for people watching.