It's been a few years, but I really enjoyed the Tillamook Cheese factory tour in Tillamook, Oregon. They keep you behind glass, but you walk around on catwalks through the whole operation, which is big. Also, when you get to the Monterey peninsula in California, it's worth paying the fee to drive along 17 Mile Drive. The views are stupendous,you can usually see sea lions, etc., and you can stop to eat or just wander around at the Pebble Beach Golf Course. The mansions along the drive are fun to check out, too. More later... & happy planning!