Between our national parks visits, we spent a week along the Oregon coast near Tillamook, at a place called Netarts Bay. The private campground had some limitations, like sites that were way too small, but the surrounding area was so awesome to explore. The bay was only a block from us so we were able to bike there and watch the folks going out crabbing every day. We did get a shellfish license for OR, but spent a day driving down the coast to find the best place to harvest mussels and missed the low tide. But highway 101 has beautiful pullouts and interesting things to see like the octopus tree, and the 3 capes along our route with very cool rock formations.

I could definitely spend a season at the Oregon coast and not run out of cool things to see and do.