[Wiki post - please be careful when editing to not remove any other contributions.]
Real world or Earth like biomes:
Name: Volcanic Lands
Description: An area with hard rock all around and massive rivers of lava flowing through the biome.
Name: Zhangjiajie (From Sikerow and Clex)
Description: Area in China with tall, slender pillars of rock reaching towards the heavens
Name: Redwoods (From Clex)
Description: Massive, thick, tall trees with reddish bark (color can, obviously, be changed)
Name: Fjord (From Clex)
Description: Sea inlet between high mountains.
Name: Ancient Ruins
Description: Very defined/sharp and angular edges/jumps that suggest the ruins of a civilization.
Description: A river/path at a very low altitude that is surrounded by steep cliffs.
Name: Sulfuric Springs
Description: Small springs that are partially hidden under dense fog.
Similar Landscape in Skyrim:
Description: High altitude flatland in an otherwise low altitude flatland.
Name: Basalt Columns
Description: Large, rocky columns made of basalt, stone, or some other rocky material.
Name: Icy tundra.
Description: snow covered rocks, minimal amount of trees and bushes with a few animals around. But with many small underground tunnels and clear lakes.
Name: Paradise Isles.
Description: hugh amount of Isles with carrebean / prehistoric landscape, tropical plants and paradise birds.
Name: Smooth green hills
Description: lot's of hils with small - average trees, wide fields.
Name: plateu isles
Description: big amount of thailandish looking plateu isles
Name: mountain side with rivers and lakes
Description: mountain side with many rivers and clear lakes. Some woods and big caves inside the mountais with lots of gold and silver in their bodies.