Birkenau is the second death camp that was built to decrease some of the congestion in Auschwitz. Although Birkenau did not have much left compared to Auschwitz I, there was still enough to tell more of the sad tale. This is the camp where the train pulls directly in. The victims were piled into horse stables, which were the same temperature as the outside. There were numerous gas chambers that were running 24/7. To see Birkenau was another terrifying experience.