Michi no Eki. You’ll want to be learning those kanji, as they mean ‘road station’, and you’re definitely want to stop in at some if you’re out and about. Basically they’re service areas, but often in country areas and specialise in selling local produce or promoting local sights as well. Car parks range in size from quite small ones for ~ 10 vehicles up to multi-hundred vehicles where there are often meet-ups and events.
This page is not part of some insane idea to visit them all – there are hundreds of the things, so it’s more for just listing the ones I have hit, and likely I’ll do a normal post to tell any stories around the visits.