For brunch on Sunday, we went to the Space Needle and ate at its revolving restaurant at the top. It does a full rotation in one hour. While it rotates on clear days, you can see Mt. Rainier, across Puget Sound, as well as the rest of the scenery.
The food they serve mixes normal brunch food and adds seafood to it as well. I had Eggs Benedict, but instead of ham, I had crab on it.
Also, while we were waiting to be seated, you can go upstairs to the observation deck to admire the view as well.
You can eat here for other meals as well during the rest of the week.