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
Official Website http://www.gross-rosen.eu/
Address 58-152, Poland
Coordinates 50°59'53.434" N 16°16'29.023" E