Berufsfeuerwehr Basel-Stadt looks like a POI which should be in a multipolygon relation, or otherwise have details merged or differentiated (if they currently have different functions and/or buildings were built with a different function themselves).

Details are on the following objects
- https://www.openstreetmap.org/node/259192854/history
which is in
https://www.openstreetmap.org/way/270642591/history
- https://www.openstreetmap.org/way/270642599/history

Imagery: Kanton Basel-Stadt 2020, swisstopo SWISSIMAGE