Auschwitz: Auschwitz, Nazi Germany’s largest and most lethal concentration camp, located in southern Poland. The 10 Best Auschwitz-Birkenau Memorial and Museum Tours & Tickets Photos, Videos, & Maps · Verified Reviews · a TripAdvisor CompanyThe most venerable and polished of the tour-and-activity sites. – BBC. Auschwitz concentration camp, Oswiecim. K likes. Auschwitz concentration camp was a network of German Nazi concentration camps and extermination camps /5().