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 and Strzegom. Its prisoners were mostly Jews, Poles and Soviet citizens.
At its peak activity in 1944, the Gross-Rosen complex had up to 100 subcamps located in eastern Germany and in German-occupied Czechoslovakia and Poland. The population of all Gross-Rosen camps at that time accounted for 11% of the total number of inmates incarcerated in the Nazi concentration camp system.
Wikipedia https://en.wikipedia.org/wiki/Gross-Rosen_concentration_camp
Address 18 Staroszkolna, Bolesławiec 59-700, Poland
Coordinates 51°15'59.065" N 15°34'59.431" E