The process of shaping trees is called pooktre. These folks have perfected a gradual shaping method, which is the shaping of trees as they grow along predetermined designs. Never heard of this before...so I guess I've already learned something new today!
I want this in my backyard and for it to have a staircase going down, a hallway, and then leading into my basement. How cool would that be?!?! (But I would want the trees from The Nightmare Before Christmas and have like themed bunkers or something)