no. 23, 1 level

either separate mosaic as an additional way, or just add as a node. Wall and artwork shouldn't be one object per one object, one entity policy

"none here"
The place has gone or never existed. A user of Organic Maps application has reported that the POI was visible on the map (see snapshot date below), but was not found on the ground.
OSM snapshot date: 2025-02-27T10:33:49Z
POI has no name
POI types: shop-convenience
#organicmaps android

2 levels, under renovation

"2"
OSM snapshot date: 2025-02-27T10:33:49Z
POI has no name
POI types: building tourism-attraction
#organicmaps android

3 level

"pedestrian bridge across the river opposite the building"
OSM snapshot date: 2025-02-27T10:33:49Z
POI has no name
POI types: building
#organicmaps android

no. 13

no. 18, 1 level

2 level