The stage consists of levitating platforms, with N's Castle in the background.
I whipped this image up pretty quickly.
Average character size
Main platform. Sometimes, stairs will shoot out of N's castle, hit it, and cause it to collapse. It can regenerate, though.
Moving platforms. Move back and forth between the blue dots.
Platforms that never go away, thin ones are not solid.
Bridges. They shoot out of the solid platforms. There can be either:
1. Two vertical bridges that act as walls, and no horizontal bridges
2. One horizontal bridge, that is not solid, and no vertical bridges