Probably the best bit of landscaping I've ever done; this is Darkmoor Grotto, located south of the Pine forests in Aukisgrove. My idea was to make somewhat of an ancient sinkhole, and then make it look like it had been grown over with trees and grasses, etc.

Aukisgrove: http://www.planetminecraft.com/project/aukisgrove-wip/

Aesthetical Mods I use and are reccomended for viewing:
Optifine (OptiFine 1.8.0 HD U B6): http://optifine.net/downloads
Conquest 1.8 Resource pack: http://www.planetminecraft.com/texture_pack/conquest-32x32/
Sonic Ether's Unbelievable Shaders (Ultra): http://www.minecraftforum.net/forums/mapping-and-modding/minecraft-mods/1280299-sonic-ethers-unbelievable-shaders-v10-1