What type of photography do you do? For landscape, go to the coast, then go to the Cascade mountains. The Gorge is a must, so are the deep recesses of the forest in the coast range...wait...can you tell us what you like to photograph and maybe we can help. Growing up there, I think I can still draw a map of both states from memory, with major rivers, mountains, roads and must see places. Tell us what you want to see.