1. A 1502 map of Imola, deemed the "most accurate of its time", and the modern Google Earth photo of the same city.
2. The "Vitruvian Man"
This drawing, inspired by the writings of the ancient Roman architect Vitruvius, was described by Carmen C. Bambach as "ranked among the all-time iconic images of Western civilization".
3. The "ornithopter," a flying machine.
Leonardo designed various aerial machines, including an early parachute and a hang glider.