A lost world
For fans of British steam locomotives (like me), fans of industrial films, and fans of what, in the 1930s, was pretty high tech: Think of assembling a plane at Boeing.
You can also see what it looked like when the working class made things, as opposed to shelving them. Of course, when you see glowing shafts of metal hot from the forge being wheeled about the plant on small carts, and then beaten with hammers, it looks like madness, but I bet there was a lot of satisfaction in it, too, despite the smoke and the heat and the stink. I loved working in the factories. When the working class made things.