Visit both Auschwitz I and Auschwitz II-Birkenau to acquire a proper sense of the place that has become the symbol of the Holocaust as well as Nazi crimes against Poles, Romas, and other groups. Become more educated about the UNESCO World Heritage Site as you visit the remaining prison blocks, gas chambers, and crematoria buildings. See the remains of the railway ramp in Birkenau, where the prisoners would be transported.