Bottom of the cake is 10", about 24" high. The cake is covered in Magic Chocolate, my first time working with it since I got it at the ICES convention. It is great! I found it even easier to work with than regular modeling chocolate and the taste is awesome. The castle on top is an edible image covered in isomalt for the icy look and rigidity. You can't see it on the photo but there are also icicles on many of the ruffles made from Decogel.