In the 1990s, in a pre-digital world (at least for me), I would take wandering trips around the country, exploring backroads and small towns and playing whatever courses were listed in the printed PDGA Directory. They were few and far between.
I was somewhere in or near Iowa, and the backroad I was following dead-ended into a 4-lane highway. Across the road was a high school, so I pulled over to it to stop and study a map, and decide which way to go. When I finished and put down the map, I looked out the window and there was a basket about 40' from me. I hadn't noticed it pulling in because it never crossed my mind that there would be anything of interest in a high school parking lot.
I don't remember the name, but there's an arboretum of sorts next to a school, and a pretty 9-hole course in it.
I ran into several other little 9-hole courses---seems every little town in Iowa has one in their town park---but that was the most startling.