Creative…
Wundaland: Creative, WorldEdit, Normal Terrain, Nether and End. Because of the risk of griefing only server members can access creative and worldedit. However anyone can join and explore the amazing creations found here. Move beyond redstone area at spawn and build in normal world generated terrain. Wundaland is the go to place to test ideas
MadLab: *NEW* Creative, Worldedit, Superflat, No Nether or End. Same protection as Wundaland but way leaner and more server resources dedicated to handle complex Redstone and TNT launchers.