Oh, the center square was not designed yet! See the other post on the Menger Sponge quilt to see the center block design.
Originally Posted by Thusnelda
Wow, I'd hate to fiddle with all these tiny pieces. I'm sure it's going to look fantastic. Hope you don't mind, if I have one suggestion regarding the design. I'd add the attic window bits also to the big "hole"/square in the middle to emphasize the 3D effect.