If I had actually played my Tail Concerto game earlier, I would have known that one, too. I got another one..

In Sonic CD for Sega CD, if you watch the Anime Video at the beginning, you'll see Sonic run and leap into this gigantic thing that's floating in the sky...attached to the ground by a chain, in much the same way the top of Mt. Woe in Chrono Trigger is.

And in case you can't figure it out, I am Flying Omelette.
Flying Omelette's Palace