Now that you know which factory I visited, here are a few more pictures...
Socks (more commonly known as insoles in the US) with their adhesive backing applied and ready to be put inside the finished shoe
Gluing on the sole
The leather upper is attached to the last by affixing a rope with nails to the lining that is left sticking out above the upper. Doing this ensures that the shoe doesn't slip down too far on the last when it is lasted.
Machine for lasting the toe
Machine for stretching and forming bootlegs