Just announced on the Space Needle's Facebook page:
Our 50th anniversary is this Saturday, April 21 we’re going retro in more ways than our Galaxy Gold roof. We’re opening the doors early (7:30 a.m.) and offering $1 admission, the original price in ‘62, while supplies last. Tickets will be good for a 1-hr time block. Supplies are limited and tickets will sell out so come early to secure admission and stick around for our ‘60s DJ, retro-souvenirs, and photo opportunities with “Elvis.” For a small donation visitors can also enjoy a special Space Needle 50th Anniversary donut, created by Mighty-O Donuts. Come celebrate with us!
If the thought of being at the Space Needle (or anywhere, for that matter) at 7:30am scares you, but you still love the World's Fair, check out these other anniversary events happening around the Seattle Center on Saturday, April 21, starting at the civilized hour of 10am.