There's so much there, it's hard to choose! Of course PIke's Place and check out the price for going up the Space Needle and the price of a meal...you get a 360 degree view while you eat...as the restaurant rotates while you eat (plan on an hour and a bit more to go outside and peek at the view). If you like art, the art museum is not far from Pike Place. Benaroya Hall is an experience and there are plays that go on...you might Google Seattle events and see what's offered. Have fun!