When we pulled into the driveway of The Evergreen Aviation Museum the first thing we saw was this 747 on the roof of one of the many large museum buildings.
This turned out to be the totally enclosed water park. Inside you climb stairs up to the 747 where you pick which water tube you want slide down in.
What a behemoth this is, the wing of The Spruce Goose is so thick that a person can walk out to the most outboard engine without bending over. These engines are Pratt & Whitney, 3000 hp, 28 cylinder, R-4360s; 8 of them!!