In Jasenovac the majority of victims were ethnic Serbs (as part of the Genocide of the Serbs); others were Jews (The Holocaust), Roma (The Porajmos), and some political dissidents. Jasenovac was a complex of five subcamps spread over on both banks of the Sava and Una rivers. The largest camp was the "Brickworks" camp at Jasenovac, about southeast of Zagreb. The overall complex included the Stara Gradiška sub-camp, the killing grounds across the Sava river at Gradina Donja, five work farms, and the Uštica Roma camp.