In context of overlay "Things" – Art Installation – https://osm.org/node/13445068444 via StreetComplete 62.1:

Künstler: Alf Lechner
Titel: Vertikal-Horizontal, 
Herstellungsjahr: 1988

Attached photo(s):
https://streetcomplete.app/p/323441.jpg
https://streetcomplete.app/p/323442.jpg