A huge frozen continent on the north, where my house and spawnpoint is, near the two huge glass pillars. The end portal is down close to those columns, in a stronghold that spawned there conveniently. I engineered a fast-transit system through the nether with minecarts and eventually found my way to greener pastures in the south, where I vacation, which has a gigantic mountain, plains, deciduous forest, and even jungle. Mineshafts and caverns abound underneath the northern wastes, where I'm beginning a TNT-mining operation.