If the forecast is looking grim, why not spend some time at Anjo City Museum of History? You'll be fascinated by just how much you can discover about days gone by here.
You'll have no end of sightseeing choices when staying in Anjo. Anjo City Museum of History is a good place to kick off here, but there are lots of other worthwhile attractions to enjoy. Okazaki Castle, Okazaki Park, and Kariya City Traffic Park are not far from the collection of historical artifacts and and will cap off your day nicely.