I made this cake a few weeks ago. Then we went on vacation, so I didn't get a chance to post it until now.
My nephew and youngest son had a Spider Man birthday party. I bought 2 Spider Men to put on the cake; since there were 2 birthday boys.
I had a hard time finding chocolate graham crackers. It took going to 3 stores before I could find them. They were the best thing I could think of for buildings. It took a little while to pipe the windows on.
My son Isaak wanted both a "circle cake" and a "square cake", so the bottom is a square and the top is a round cake. It worked out pretty well for the buildings to fit on the square corners!
The topper kept sliding into the cake, so I had to change toppers last minute. Luckily we have a few Spider Men laying around! I didn't want him to look like he was in a spider web quick sand mixture!