Here is a 128x 128 creative spawn I made for the pcgamingforum.org minecraft server.
They are predominantly a factions server, however they have recently opened up a creative plotworld and required a new spawn (one of many new projects they have going).
World edit was used to create chunks of blocks for where the mountains/hills would go, however they were hand carved out and everything else was hand built.
All in all this project took me about 2 weeks to complete.

Screenshots taken in default texture.