The blocks in Frank Lloyd Wright’s Annie Pfeiffer Chapel at the Florida Southern College are some of his most elaborate, made possible partly through cheap student labour. The blocks have stained glass inserted into them, a combination of a larger L-shaped piece at either end of each block and smaller square pieces along the top and bottom. The inside and outside skin are made of identical blocs, with a cavity in between. The blocks are a composite wall and window. Here are a bunch of interior and exterior details.