Stolpersteine is the German name for stumbling blocks collocated all over Europe by German artist Gunter Demnig.
They 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.
Stolperschwellen are much larger and they usually remember a group of victims.
The Stolperschwellen and the Stolperstein of Weingarten were collocated by the artist himself on 17 April 2013.