Not strictly a tourist destination, and also not in Seattle proper. It's
located in Federal Way, about 20 miles south of Seattle. Half of the park
is a water slide park. (In this climate? Well, yes. Whose idea was that,
anyway?) It has a giant wave pool, speed slides, outdoor hot tubs, and a
river raft ride which totally rules, especially if you go with a bunch
of friends and scream a lot. The cannonball slide is good for getting
a power wedgie, too.
I haven't been to the park since it was purchased by Six Flags and a new
roller coaster was added. Last time I was there, the other half of the park
was a mild little amusement park, with a few good
rides, a small roller coaster, and the scariest collection of waxwork figures
I've seen off the big screen. It's geared more to kids, but my friends and
I still go every year and have a blast. Our favorites include the carousel
and the giant slide with the burlap bags to sit on. You can get admission
to just this half of the park, or to the whole thing (but not to the water
half alone. Go figure). It's a little on the spendy side, but if you stay
for a whole day and bring a picnic lunch, it isn't too bad. Bring sunscreen,
even if it's cloudy. I got the only sunburn I've ever had in my life here.