I wonder if Apple could build a factory somewhere touristy in the US (California, or maybe near Disney World, or something), designed specifically for tours (like the BMW factory and European Delivery center), and make enough from tourism (either cash or "brand value") to overcome the costs of production in the US.

I'd pay $20 to see the modern equivalent of the NeXT factory for 30 minutes, from an overhead viewing gallery.

Obviously Apple wouldn't want to reveal trade secrets, but I don't think there's much secret about how Apple produces the desktop and laptop products.