I drove up last weekend from Portland last weekend to see Dodgers/Mariners (recent PNW transplant from LA), it's a cool city. Check out Elysian Fields before the game. If you have time to kill take a couple beers and a blanket/towel and check out Gas Works park which is about 5 miles north. Views of the lake, city skyline, Space Needle etc...
Kerry Park is popular for Space Needle views and a bit more accessible from Pike Place Market (which is a given to visit) etc.