I like the look of 3-blocks high on "normal" walls, and for special walls, I make them 4 or 5 blocks high with littel trnsition pieces on the ends so they match up with my 3-block walls. And then I make the wall on the oposite side of the hallway only 2 blocks high so you can see more of the special wall.


 
Location: Pittsburgh
Facebook: http://www.facebook.com/#!/brian.wieczorek