Flew into Pasco, WA last summer for work. After a morning of work in College Place, WA I drove to Pendleton, OR. From there headed west on I-84 all the way to Portland. Spend the night in Portland and worked the next day. That afternoon I followed the river all the way to Astoria.
Didn’t get a lot of time to stop and see the sights. However, the trek was quite worth it. I knew Eastern OR was dry from previous trips to Pasco and LaGrande. But it was much drier than I expected along the way. Of course it started to green up by the time I reached the Cascades and the Gorge Scenic Area.