Enjoy new environments or rather, your worlds biomes to Minecraft.
Enhanced Biomes 1.7.2 and 1.7.10 now compounded by a total amount of up to 30 new biomes with up to 23 variants (variants have a significantly lower rate of occurrence than the rest). These new parts, are composed by the combination of both materials or usual game blocks, such as new blocks, resulting in both cases new biome, with new possibilities.

Detail and Download here : Enhanced Biomes Mod

Homepage: Mods for Minecraft