I made this cake for my daughters 10th birthday. I got the idea from looking at several different pics on-line. The bottom layer is a dummy (I didn't need that much cake!). The turrets are paper towel tubes covered in plastic wrap and frosted with bc. The tops are ice cream cones sprayed with black edible spray in the can. The crests were plastic rings I had bought. The doors, windows and clock are fondant. The arch over the clock is graham crackers. Plastic trees, shrubs and Harry. Edible chocolate rocks. Oh, and I smoothed EVERYTHING with Viva paper towel.