Artists: Prof. Georg Herting (Hanover), Frank Thomas Gatter (Nienburg)
The memorial to the Nienburg fallen of the First World War was created in 1927 with the dominant shell limestone sculpture "The Mourner" by Prof. Herting (Hanover). A sandstone slab on the plinth bears 387 names, and an "Iron Cross", also made of sandstone, on the ground in front of it. In 1966, the site was extended with a stone monument to the victims of the Second World War; a few years later, a second memorial stone was added to commemorate the victims of expulsion and violence.
In 2019/20, F. Th. Gatter (Nienburg) designed a memorial with four armored glass steles for all groups of victims of National Socialist crimes in the city and district. On November 8, 2020, the entire complex was rededicated as an "Open Classroom Remembrance Landscape". A steel plaque at the base of the "Mourners" puts the heroizing inscriptions from 1927 into perspective and includes the victims of all nations in mourning and remembrance.