Leonardo da Vinci
Two of his paintings are among the best-known in the world: the Mona Lisa and The Last Supper. He did many drawings. His best-known drawing is Vitruvian Man. Leonardo often thought of new inventions. He kept notebooks with notes and drawings of these ideas. Most of his inventions were never made. Some of his ideas were a helicopter, a tank, a calculator, a parachute, a robot, a telephone, evolution, and solar power.