We show local Wikimedia common pictures, osm tag pictures, og:image pictures of the website if any, Wikipedia article infobox pictures, Panoramax for street-view, and last but not least, any picture dropped by an ATproto place review.
Lots remain to be done, especially building the latter community of reviews.
- https://wiki.openstreetmap.org/wiki/Key:wikimedia_commons
- https://wiki.openstreetmap.org/wiki/Key:panoramax
- https://wiki.openstreetmap.org/wiki/Key:mapillary
Mobile apps can use this data to either give links to them (e.g. CoMaps) or display them in the app (e.g. OsmAnd)
https://wiki.openstreetmap.org/wiki/Panoramax
I use https://mapcomplete.org/ to add images of artworks to OSM objects.
On the flip side, panoramax can be used as an open source StreetView. Different sites for different purposes I suppose