How can I improve my render of a Minecraft map? I am trying to render an image of a Minecraft map I have imported into Blender.
The quality is hideous, please help me fix it.

Render:



Map:
It seems, the light is too intense in your scene. Try to select the Sun Light and adjust it's Strength until you get more acceptable results:



You may also want to add a bit more light bounces or some ambient light and experiment with Filmic color management: