The old mill is a landmark in Grand Glade World. It is also a area in Gland Glade World. There is a pond right by it where the mill gets water. A pick axe gadget is right by it also to go mine to get stuff. There is a exit door by it to get out of the game if you need to. The exit door there also makes it easy to get to the old mill without having to go around the entire map.