This is an assembly plant. They don't show you where or how the actual components are made- that's the messy part of the process. Here, they are basically putting finished products together like legos or an erector set, but if they showed you where the plastic parts were injection molded or the aluminum casting poured, or the paneling stamped out, it'd be a gritty factory of some kind. Even more so if they showed you the pattern shops, tool and die shops, and mold shops where the real magic takes place. There's a lot of dust and dirt, chemicals and molten furnaces involved in that process. Not so easily kept sterilized, squeaky clean, and open to the public in a glass highrise downtown.