Pooky and I were up there last year. That'* a stone'* throw from the Space Needle, and the Monorail actually passes through part of that building'* roof. The Monorail, however isn't running right now. They had a fire last month on one train, with minor injuries amongst the passengers.
Last I heard, the rail wasn't running yet.
There'* a couple other really cool museums at Seattle Center. One museum had an exibit of a cold steel wall the same temp as the water in the N Atlantic when the Titanic went down. You can't hold your hand on that wall for very long.
That whole area of Seattle is amazing. You can stay busy for days.