If you are a golf fan go out to Chambers Bay where they are playing the 15 US Open. A walking trail goes through the course so you can step foot on a few greens/tee boxes if it's not too busy and there are no club employees around.
pikes place is overrated but I liked waking around the rest of downtown Seattle.
Do a ferry ride to Bremerton and tour Puget Sound. Tour is cool and the ferry ride there and back to Seattle is neat
Edit: my bad, didn't realize this was in the beer forum.