As you can imagine, on a 440-mile scenic byway passing through all manner of towns and topographies, there are going to be not only a lot of parks, but quite a few different kinds of parks! Look for city and county parks, Washington State Parks and one amazingly beautiful national park. There are also miles upon miles of back country wilderness to explore. Take the time to make note of the lands that will require permits for access (Washington State Parks, National Park Lands and wilderness areas).