Found it in this collection:
https://www.messynessychic.com/2021/12/23/forget-roadside-america-lets-location-scout-in-weird-france/
Seems to be a valley region dominated by nature, so I'm guessing that plays a part. So, perhaps not easy to reach, and also a pretty unique building that people have less impulse to tag up, salvage, etc. *shrug*