Gross-Rosen concentration camp
Gross-Rosen was a network of Nazi concentration camps built and operated by Nazi Germany during World War II. The main camp was located in the German village of Gross-Rosen, now the modern-day Rogoźnica in Lower Silesian Voivodeship, Poland, directly on the rail-line between the towns of Jawor (Jauer) and Strzegom (Striegau). Its prisoners were mostly Jews, Poles and Soviet citizens.
Source: Wikipedia — Gross-Rosen concentration camp (CC BY-SA 4.0)