Buildings of Gingerbread

This year's gingerbread creation - The Emerald City! Why do one house when you could do a whole city?
I still need to figure out royal icing, because this stuff was way too stiff to get very artistic with. Still, though, I think it turned out pretty fun. It is 4 layers of flat gingerbread stacked against each other and turned upright. Decent depth. I am going to have to try this again next year with some more thought and better icing.