The windows that keep people from jumping off the Space Needle observation deck are tilted at an angle, so you can see more of the ground right under it (also part of the floor inside is windows now so you can look straight down.)
As a result, the reflections from the observation deck windows are of what’s above and behind the observers looking at them - which happens to be the Needle’s roof and mast.
So this picture is, starting at the bottom: Some of downtown, the waterfront, Puget Sound (the water), West Seattle, some islands, The Olympic mountains, some clouds, and the reflection of the Needle’s roof, then its tower, and the supports connecting to the observation deck.
Yeah, that looks like it was a very tough shot, and well done!