 Stolperstein

A (; plural ; literally "stumbling stone", metaphorically a "stumbling block") is a sett-size, concrete cube bearing a brass plate inscribed with the name and life dates of victims of Nazi extermination or persecution.The "Stolpersteine" project, initiated by the German artist Gunter Demnig in 1992, aims to commemorate individuals at exactly the last place of residency—or, sometimes, work—which was freely chosen by the person before he or she fell victim to Nazi terror, euthanasia, eugenics, deportation to a concentration or extermination camp, or escaped persecution by emigration or suicide.