Two major national freebies happening this Saturday:
Smithsonian Magazine's 6th annual Free Museum Day allows you free access to a number of museums across the country. You can find more information at their website here, plus print out your ticket (good for 2 people) to present to the museum for admission.
Also, Public Lands Day is this Saturday, which means free admission to all national parks!
And now for a local freebie:
The Seattle Parks Foundation is hosting a grand opening celebration of Lake Union Park from 7 AM to 7 PM. Lots of fun, FREE events happening, as well as the opportunity to snag Metro Free Ride tickets (good for bus and streetcar) to get you there and back. You can find more details here.
The weather is supposed to be great in the Seattle area on Saturday, so get out and take advantage!