Stories behind the personal items and belongings left behind in Auschwitz Birkenau, a former Nazi concentration and extermination camp, the world's largest cemetery and resting place.Stories behind the personal items and belongings left behind in Auschwitz Birkenau, a former Nazi concentration and extermination camp, the world's largest cemetery and resting place.Stories behind the personal items and belongings left behind in Auschwitz Birkenau, a former Nazi concentration and extermination camp, the world's largest cemetery and resting place.