Spent last night for free in the Columbia River Discovery Center and Museum parking lot. Then toured the museum today. Only 10 bucks. Lots of info and history of the Columbia Gorge, Lewis and Clark, and the Oregon Trail. Well worth the stop. https://www.nps.gov/places/000/columbia-gorge-discovery-center-museum.htm

They also have some nice paved trails around the museum property. They are part of Harvest Hosts http://harvesthosts.refr.cc/loveyourrv