Mt. Togoku Fruits Park is worth a pic or two when discovering Moriyama Ward. It's also full of great shops and restaurants, so you can spend the afternoon having a wander.
If museums are on your list of things to see in Seto, then you might want to head to Maneki-Neko Museum. If you want to see more of the museums in Seto, Toyota Automobile Museum and Aichi Prefectural Ceramic Museum aren't far.