WA-17N --> Park Lake Rd NE in Coulee, a distant cousin of Great Ocean Road

This is not really in Seattle Metro Area, but within 3hrs' reach.

If you haven't been to Coulee WA, please do organize a day trip there.  If you love to feast your eyes on rolling mountains and massive greens, you would love the special treat of Rocks and Lakes in Coulee......

The road trip to Coulee / Dry Falls from Seattle via I-90 is scenery, the last section of the road reminds me of Great Ocean Road back home (Victoria Australia).  I shall re-visit this place over and over again.....