The public institution "Memorial Site Donja Gradina" (established in 2002) is dedicated to preserving the memory of the victims of the Ustasha genocide committed at the Jasenovac Concentration Camp during World War II. Donja Gradina, as the largest execution site of this camp, serves as a place of commemoration, scientific research, and education about the crimes of the Independent State of Croatia.

The memorial site includes numerous marked execution grounds, as well as a memorial complex that serves as a venue for scientific conferences, exhibitions, and educational programs. The institution is actively engaged in research, collecting documents and testimonies, and publishing scientific and educational materials.

Particular emphasis is placed on preserving the authenticity of this execution site and raising awareness of the importance of remembering it. In this spirit, annual commemorations are organized, while cooperation with domestic and international institutions contributes to expanding knowledge about the crimes committed within this camp system.