Windmills are machines that converts the energy of the wind into rotational energy by means of vanes. First invented by the ancient Greeks, they reached their peak use in Holland in the mid 19th century. At that time there were over 200,000 in use in Europe. Today they have evolved into wind turbines and produce renewable energy all over the world. With 216 pieces this historical windmill is fascinating to construct and stands an impressive 36 cm high! Finished Puzzle Size: 16 x 16 x 36 cm.