witch one looks better,

I think you should change the lamp in the second one to a sun lamp. what is it supposed to be?

castle ruins

I think the second is quite good - it’s of a nice warm atmosphere. I’m not quite sure how you intend to present this - but I think you can add many additional touches to the render with plants, shrubs, cobwebs, lichen and cracks . . . just to name a few odd props that can move this to the moderators gallery. Look forward to your updates on this, I have a feeling that you will be a while on this exercise.