She pushed two of her snowballs together, added a third, packed more snow in around them, and patted the whole thing into the shape of a cylinder. When it was done, she stood it on end and used the tip of her little finger to poke holes in it for windows. The crenellations around the top took a little more care, but when they were done she had a tower. I need some walls now, Sansa thought, and then a keep. She set to work.
The snow fell and the castle rose. Two walls ankle-high, the inner taller than the outer. Towers and turrets, keeps and stairs, a round kitchen, a square armory, the stables along the inside of the west wall. It was only a castle when she began, but before very long Sansa knew it was Winterfell.