The concentration camp in Bretstein was an external camp of the concentration camp in Mauthausen located in Upper Austria, which directed about more than 50 external camps. In Bretstein, at least 170 prisoners were locked up in four barracks, which were surrounded by huge fences and some watchtowers.
Bretstein functioned as an external concentration camp subordinate to Mauthausen, overseeing more than 50 additional camps. At least 170 prisoners were held within four barracks at Bretstein, which were secured by high fences and a few watchtowers.