Cake is a 12" square bottom tier, 8" square middle tier, and 4" pyramid top tier. The turrets are made from rice krispy treats, chocolate seashells, bridge and crabs made from fondant/gumpaste, and moat is poured sugar. Cake was for my twins' 3rd birthday. Thank yous: Feefs for directing me to an article by Norman Davis & Jaci Salisbury on building a sand castle cake, and kbochick for help with the moat! Couldn't have done it without you guys.