In this tutorial: Create a Realistic City - Blender Tutorial
At 10:36 he presses CtrlAltNumpad 0
When I do the same I get nothing but an empty view. Then he goes back to object mode and can play with the camera zoom in out.
I'm now in edit mode and everything selected.
And more or less I'm in same position as he is.
Now when I press CtrlAltNumpad 0 I get this:
Not even close to what he did.