You really can't beat the view of Seattle from the observation deck of the Space Needle. It's pretty spendy to ride to the top, but it's worth it on a nice sunny day when you can see all the way to the mountains on both sides of the city.
Just don't eat in the restaurant - the food is ridiculously overpriced and very mediocre. Be sure to visit the gift shop in the observation deck - and stand at the front of the glass elevator for the stomach dropping sensation!
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