Why is one of my walls not lit?

http://puu.sh/8wRlt.PNG

Trying to make a massive fortress for fun to walk around in with the oculus rift and am starting off with the wall using geometry.

Is there a way to change the lighting so let’s say the east wall isn’t completely pitch black while the north wall is completely illuminated? I have a directional light if that helps.

Yes, you need to use a Skylight. You can find it in the Lights tab on the left side.