Unable to answer "What kind of building is this?" for https://osm.org/way/26913350 via StreetComplete 56.0:

Sub

Attached photo(s):
https://westnordost.de/p/193855.jpg
https://westnordost.de/p/193856.jpg
https://westnordost.de/p/193857.jpg
https://westnordost.de/p/193858.jpg