I would encourage you to tell the others about the criteria as well, so that they know what can and cannot be submitted, and what may or may not be eligible. Share the links that we have shared with you.
Yes, there are many at hospitals that would like more Wayspots there in order to play the games, but they have to follow criteria first and foremost. For example, art is typically eligible, but the art piece that you submitted looks like it’s at the admitting entrance for the ER possibly. Being near the ER would make it ineligible, as players could possibly obstruct emergency services.
Directional signs around a hospital or any other area are not great places to be social/exercise/explore. Some think they meet the exploration criteria, but they are just directing you to where you may need to go on the campus, and those areas may not meet exploration criteria; most people are not going to exploring around a radiation treatment area, a surgery center, and a behavioral health area.
Like I noted about the first one, it’s not a garden, it’s just landscaping to make te area look more pleasing; I wouldn’t be surprised if there are others like this around the campus, or other planted areas that are similar. There’s no field here worth exploring either, like a sports field would (great place to get some exercise and be social), just a grassy area, which again is a part of the landscaping. Retaining walls are part of infrastructure and landscaping, usually holding up soil in a lateral way so that it doesn’t slope downwards, and allows for landscaping plants to be added.
If you are looking for POIs that may be eligible on the grounds of a hospital, first make sure that they don’t obstruct emergency services. Next, look for things like outdoor picnic areas, unique art that could be in waiting rooms and lounge areas, gift/food shops (like a coffee shop), decorative fountains, etc. Here’s a few examples from the hospitals that are in my area.
Busts of former hospital leaders at the main entrance of our largest hospital in the main lobby:
Gazebo outside of another hospital for staff and the public to use, on the northeast side (south side is where the ER entrance is):