This is one of the more memorable symbols of Seattle which was built for 1962 World's Fair. At over 600 feet tall, the Space Needle has the best views of the city. Try the day and night pass to see the city bathed in light and then in darkness.
If you have the coin, check out the revolving Sky City restaurant for a romantic dinner with a great view that changes. I love seeing the city at night. If you don't have a chance to go here, at least check out the webcam below for a view of the city.
Website:
http://www.spaceneedle.com/webcam/