umm... the space neadle? they have a huge museum of flight with the old air force one... i dont live there tho.. Im from vancouver (close to it) but ive been.. through seattle a few times...
check out
http://www.cityofseattle.net/html/visitor/tourism.htm
and just do a google search for seattle tourism.. well i already did it for you :P
http://www.google.ca/search?q=seattl...-8&hl=en&meta=