A map of where anime and manga are set rather than filmed, because nothing is filmed in a drawn show. 568 titles, 589 real places, 39 countries.
It has Washinomiya Shrine for Lucky Star and Hida-Furukawa Station for Your Name. It has nothing at all for Attack on Titan or One Piece, Slam Dunk is only Hiroshima, and about half the map is still just a city rather than the actual spot. (Working on it)
I have not gotten to the rest yet. If you know an exact spot, tell me and I might be able add it.
Free, no ads, no signup. Data is CC0.
You can do it here in the comment section for example. I also have a mail address on the website where you can submit to. I am not picky about where the user reports missing entries.
I am just honestly happy that you want to add entries.
Usually I just scan the internet for feedback and it gets picked up:)