Introduction to the Dutch Windmill: The main function of the Dutch Windmill is drainage. It is equipped with a water tank wheel; it can also generate electricity, grind flour or saw wood. The big windmill is actually a building with a mixed structure of brick and wood. It is four or five stories high. The lower two floors are habitable, the third floor is a storage room, and the top floor is the machine room. The central axis of the windmill blades is at the highest point, and the blades are the longest. up to 40 meters. The shape is unique, the color is bright, and the image is vivid under the blue sky and white clouds.