During the Second World War, the German occupying regime in Estonia had more than 30 detention sites. They were in operation for varying periods of time and their size differed greatly. Such detention centres included prisons in Tallinn and county centres, concentration camps in major towns and in the region of oil shale industry in northeastern Estonia, and others. In addition to the aforementioned, several Soviet prisoner-of-war (POW) camps were used. In the first year of the occupation, mainly local residents fell victim to racial and political repressions. Later, the occupying regime began to transport Jewish people from other conquered countries to Estonia as part of the Holocaust. Klooga concentration camp memorial commemorates these victims, whose mass murders have left the severest mark on the period of German occupation. In time, we wish to share the stories of other main detention sites on this website as well.