This lake and park are very close to our house and you can often find us running around it or walking Oliver on a nice day. It's a great place to just hang out, or rent a kayak or stand up paddle board and hang out on the lake for awhile! Lake Union is another great place to rent all kinds of watercraft and see the city from a different viewpoint!
We love our parks up here! (Just ask Kevin). Golden Gardens is a great beach and park on the west side of Seattle. Some other beautiful parks we love are Discovery Park (take some time to wander!) and Volunteer Park (be sure to stop at Volunteer Park Cafe for wonderful coffee and pastries).
You'll often find Gas Works packed on a sunny day; the hill in the middle of the park provides a great view of the city, and the structures at the bottom are a ton of fun to explore. Plus, Gas Works was featured in the movie 10 Things I Hate About You! Afterwards head a couple of blocks west to check out Fremont Brewing, another favorite of ours.
Check out the Boeing Factory Tour, which starts from the Future of Flight Museum. You'll get to see where some of the planes Kasey has worked on are built, and if you drive around the site you'll see the plane she's currently working on testing. There are multiple tours each day, so you can make this a day of decision, or if you'd like, you can purchase advance tickets online.