Twice as High as the Space Needle!
Say what you will about Seattle's Space Needle, but the best views of the city actually come from the Columbia Center. By heading up to their observatory floor, you'll actually be twice as high and be able to see that much better. Additionally, this alternate view will allow you to capture the Seattle skyline with the Space Needle in the photo as well.
There are no lines, lots of space to move around, descriptions of everything you can see from the observation floor, and a much lower price than the Space Needle. Especially if you're there on the off-season, ask about purchasing tickets