There is so much to do, it's almost hard to start naming things.
Mt. Rainier, Mt. St. Helens, Washington Coast, Olympic Peninsula, Oregon Coast, Columbia River Gorge.
My top picks would be a trip to Mt. Rainier or Mt. St. Helens, and the Columbia River Gorge, if you are wililng to drive a ways. Also, the Olympic Peninsula and Washington Coast is tops in my book. From my various relatives visiting me over the years, those have always gotten high marks,and in August are beautiful.
it depends on what you are most interested in. If you let me know how adventurous you are and how far you're willing to drive, I can probably help you more. I probably wouldn't drive all the way down to the Oregon Coast from Seattle, as it doesn't have that much more to offer than the Washington Coast does and is much closer, but if you'd really like to go ahead.
A good trip is to take a ferry over to the Olympic Peninsula (Pt. Townsend area), and drive to the olympics up Hurrican Ridge, than make the circle all around the peninsula to come down and stay in one of the resort towns on the coast (Ocean Shores). From there, you could drive down to the Columbia River gorge (bordering Oregon/Washington) and stay for the evening at one of the resorts or nice hotels, and then drive north via Mt. St. Helens back to Seattle. Keep in mind this is lots of driving, but you'd get to see the really beatiful sites of Washington.
Or, if you'd like more relaxing time at sites, just do the Mt. St. Helens/ Columbia River gorge part of the trip. It's beautiful, and hiking near waterfalls in the gorge area is one of my favorites.
Hope that helps. E-mail me if you need more help.
Post Edited (03-30-04 16:19)