Greetings,
Is there a list or a section of this forum where one can find examples of good 3D work? Here’s some stuff I’ve been working on 
http://demo.f4map.com/#lat=39.7489903&lon=-104.9995371&zoom=16&camera.theta=63.613&camera.phi=-2.474
http://demo.f4map.com/#lat=39.7560141&lon=-104.9939226&zoom=19&camera.theta=70.031&camera.phi=167.35
I started a Wiki page, only a view entries yet:
https://wiki.openstreetmap.org/wiki/Simple_3D_Art
You may find more good 3D places in my “OSM go” Twitter feed:
https://twitter.com/osm__go
I don’t know about a list on this forum (except https://forum.openstreetmap.org/viewtopic.php?pid=462818 )
You can find a list at F4map: http://wiki.f4map.com/gallery
Here are some more examples:
http://demo.f4map.com/#lat=52.2396182&lon=21.0453981&zoom=19&camera.theta=62.189&camera.phi=-110.294 (see more details at https://forum.openstreetmap.org/viewtopic.php?pid=462818#p462818 )
http://demo.f4map.com/#lat=25.1994052&lon=55.2724501&zoom=17&camera.theta=38.697&camera.phi=43.258
http://demo.f4map.com/#lat=43.3175711&lon=45.6939478&zoom=19&camera.theta=59.037&camera.phi=-165.871
http://demo.f4map.com/#lat=48.5821493&lon=7.7502870&zoom=19&camera.theta=43.674&camera.phi=13.465
http://demo.f4map.com/#lat=49.4408782&lon=11.1051442&zoom=18&camera.theta=58.178&camera.phi=16.902
http://demo.f4map.com/#lat=49.4540832&lon=11.1174691&zoom=18&camera.theta=59.946&camera.phi=132.926
http://demo.f4map.com/#lat=49.4494872&lon=11.0796590&zoom=18&camera.theta=69.114&camera.phi=-145.714
That looks mostly like places with inserted 3D models. I assume, chachafish is looking for examples, tagged with “building:part”.
No, that’s all “building:part”. Look at the data in OSM.
You might want to check this areas https://wiki.openstreetmap.org/wiki/Simple_3D_buildings#Demo_areas
I doubt one would find more solid examples than the following…
Gundam, Odaiba, Tokyo
TV Tokyo, Odaiba, Tokyo
Too bad the model’s already out-of-date, since it is no longer RX78 but the unicorn Gundam.