Once while driving down to the Oregon coast, I was very surprised to be driving through a rural area and suddenly see a 747 parked near the highway, at what appeared to be a very small airfield. Now that I know what the place is, I definitely won't visit the coast again without going to the Evergreen Aviation & Space Museum.
If you're not into water slides, maybe some of these exhibits at the museum next door will interest you:
That's so awesome! It's in McMinnville, OR if anyone wants to go.
http://www.evergreenmuseum.org/#/the-museum/about-the-museum...