The three structures originally had glass walls, but the two remaining ones don . Why?
Good question. A building, complete with walls and doors, would have become an eyesore and a vandalism target if it wasn’t regularly occupied and used, so the thinking may have been that open-air shells would be less troublesome to maintain. Also, the Fair only operated from April to October, so the structures probably weren’t insulated or otherwise suitable for cold-weather use. All in all, transforming them from offices into quasi-sculptures probably made more sense. But this is all conjecture — we’ve found no documents spelling out the thinking behind this.
