Stumbled across this awards announcement and am pasting here, because I LOVE cheese and maybe others do, too:
You can visit the Tillamook cheese factory (about 1.5 hours from Portland) and be right near the Oregon coast as well.
Dogs are not welcome on the self-guided tour, but it takes only maybe 20 minutes, unless there’s a crowd. Or you can skip the tour and just pop in and buy cheese, cheese, cheese. (Many varieties you can’t get at the supermarket.) They also make and sell many flavors of ice cream.
The factory store / visitor center is nice and they serve light food as well, which you could eat outside (or at the beach) with your sit dog. There’s a dining hall inside the visitor center. Tillamook Creamery: Plan your visit - Tillamook