Unlike Wikipedia, OSM does not have a notability requirement. You do not have to draw houses, or stuff that is on offical maps, you can map anything physical (and static). From individual trees to CCTV cameras.
E.g 1.
There was a great map posted here a while ago that just mapped power lines.
E.g 2. And a worthy map that I saw here was a wheelchair map showing where the curbs were good and venues for disabled people etc.
E.g 1. There was a great map posted here a while ago that just mapped power lines.
E.g 2. And a worthy map that I saw here was a wheelchair map showing where the curbs were good and venues for disabled people etc.