A detailed architectural black and white ink sketch of an old watermill, viewed from the riverbank looking at the front corner. The walls are made of rough, irregular fieldstones with deep shadowed joints. To the left, the long side of the building features two small rustic windows and a large wooden waterwheel rotating in the splashing river. To the right, the shorter gable side has a small wooden hatch in the triangular gable area. The gabled roof is covered with coarse wooden shingles, but the central areas of the roof are fitted with sleek solar PV panels, leaving a visible shingle border all around. On the left side of the roof, a square stone tower rises, topped with an H-Darrieus vertical axis wind turbine with three vertical blades. The turbine blades have a fine solar cell texture. The entire sketch is in black and white with fine hatching, except for a few bushes and trees around the mill, which are colored in a soft, light green. Ver mais