<human>:  What did Leonardo da Vinci do that was most remarkable?
<bot>: Leonardo da Vinci is most famously known for his artworks, such as the Mona Lisa and The Last Supper, but he was also an accomplished scientist, inventor and architect. His innovative designs and inventions included flying machines, conceptual helicopters, armored tanks, diving equipment and hydraulic pumps, as well as a variety of other contraptions. He made major advances in anatomy, optics, civil engineering and geology, among other fields.