[quote=@Dawnscroll]
[@Cyclone] Just to confirm, Logos's tower/forge of creation is known as the Citadel, and Zephy's floating castle is the Celestial Citadel, right?

So, as it's implied through the text, the Citadel is host to  variety of automated defenses and offenses which would hamper a god's assault on it, giving Logos time to return should he leave it. And if he's at thencontrols... good luck. It serves as his seat of power and the backup archive for all of his creations, along with the necessary means of creation for his creations.

Other than being a big fancy palace for Zephyrion to kick his blustery feet up... what does the Celestial Citadel do?
[/quote]

It's a mobile fortress that can go wherever Zephyrion wants it to. The giant gem that crowns its top is something like a conduit for Zephyrion's already immense control over the air and weather, and that's what allows him to blow the Citadel from place to place. No real automated defenses, but Lif's colony of guards is up there and soon I'll make a holy order as well.

Edit: Oh, it's also stupidly big if I forgot to mention that. And Ilunabar also lives in it.