http://www.pinkcakebox.com/images/cake1628.jpg
alt='Topsy Turvy Red Blue Yellow Childrens Birthday Cake'
(Mod edited to provide working link.)

I'm trying to figure out how to make a cake similar in structure to this cake from Pink Cake Box. Perhaps just 'wedged' support pieces in between, supporting dowel rods and a center support?? Any help would be appreciated!! Thanks.

Let's re-try attaching the link.....