We recently re-opened our creative world on our server. We now use a plotting system that allows players to claim their own 64x64 block plots.
We've already got quite a lot of cool stuff built by players. I'm anxious to see some really talented artists come and build some really epic stuff.
Our IP is play.finalheavenMC.us
(To get the Creative World, use the Gate spell, /cast gate, then enter the green portal at the Nexus)