I have always been a fan of Astoria as well, if you like history.
While you are checking out the history don't miss the old Bumble Bee Cannery out on Pier 39 and stop by Coffee Girl for some great coffee and eats. There is a Rouge Pub there also. It's at the far east end of town but you won't want to miss it, if you like great coffee shops.
If you are heading to Newport for the aquarium, hit up the Rogue brewery on the way and at the very least have a great meal, even if you aren't a beer fan.
If you are down south I recommend crater lake, amazing place. The coast is amazing here too, very rocky coastline that reminds me of some places in Ireland.