Flight
If you are looking for the most scenic drive, consider flying into Portland and driving along the Columbia River. Bridal Veil & Multnomah Falls are both must see spots! Be sure to stop and check out the Bonneville dam at the Washington Shore Visitor Center and watch the fish navigate the fish ladder.
Flight
For those flying into Spokane, make sure to fuel and snack up before leaving Spokane. Sprague Lake is a nice pit-stop to admire the geological formations of the Inland Northwest and Picinic.
Flight
Driving over from Seattle, you cross through the Cascades. Grab picnic supplies in Cle Elum and check out the petrified Ginko forest in Vantage. Eat lunch right on the shores of the Columbia and continue east.