Last week I happen to be in Seattle, WA and visited a small garden on route 11 "just off" I5. (sadly I could not stay for the symposium) It was a very nice little garden and I would recommend you stop to see it if you are in the area. It seems a young garden, but I enjoyed it very much. And what I wouldn't give to be able to have those mountains for my background! :) Here is one of the photos I took while there.
Here is a link that might be useful: Karma Place