The ‘Kragujevac October’ Memorial Park is located at the site where, on October 21, 1941, several thousand children and people of various nationalities were executed by the German occupiers. It was established in 1953 on the area of 352 hectares, which contains thirty mass graves.

At the very entrance to the Memorial Complex stands the building of the ‘21st October’ Museum, designed by an architect Ivan Antić and completed on February 15, 1976. The museum houses a permanent exhibition dedicated to the Kragujevac massacre and a gallery that permanently displays the painting cycle ‘Kragujevac 1941’ by an artist Petar Lubarda.

Since 1971, the central commemorative event, the ‘Great School Lesson’, has been held annually at the site of the Monument to the Executed Students and Teachers - ‘V/3’.