Designed by the 5 year old b-day girl. Her birthday is on St.Patrick's day and she always has that theme for her cake. this year she asked for a shamrock castle with rainbow batter. The turrets are cones covered in green chocolate and brushed with green sparkle gel. There is a pot of gold on the top tier w/ yellow mini m&m's. Everything else is BC. My son pointed out that I did the rainbow colors backwards on the door (oops!) BC shamrocks scattered here and there.