Take a trip to the top of the world famous Space Needle. The restaurant at the top is average and a bit costly for what you get. Aside from the experience of eating at the top, you may prefer eating at one of the many local restaurants nearby.
Take a walk down Pike Place and see the fishmongers throwing fish, stop and smell the fresh cut flowers, or grab a bite to eat while looking at the many boutiques and shops.
Massive indoor water park and hotel. Also has many restuarants and casinos.
Feeling lucky? Why not take your hand at the casino. They also have many musical guests and comedians.