Wikipedia:WikiProject Stolpersteine

Stolpersteine in Nagykőrös, dedicated to six victims of the Révész family
Overview of countries where stolpersteine have been installed.
Gunter Demnig at a collocation in Déifferdeng (Luxemburg)
Stolperstein for Josek Machnowski in Charleroi

The Wikipedia:WikiProject Stolpersteine is dedicated to the Stolpersteine by German artist Gunter Demnig. A stolperstein (German pronunciation: [ˈʃtɔlpəʁˌʃtaɪn] from German, literally "stumbling stone", metaphorically a "stumbling block" or a stone to "stumble upon", plural stolpersteine) is a cobblestone-size (10 by 10 centimetres (3.9 in × 3.9 in)) concrete cube bearing a brass plate inscribed with the name and life dates of victims of Nazi extermination or persecution.

Stolpersteine remember the fate of the Nazi victims being murdered, deported, exiled or driven to suicide. Generally, the stumbling blocks are posed in front of the building where the victims had their last self chosen residence. Demnig started to collocate Stolpersteine in the 1990s and has posed more then 60.000 all over Europe til August 2017.