How Leonardo da Vinci Made a "Satellite" Map in 1502

These days, it's pretty easy to imagine what a city looks like from above, because we are used to aerial photography and satellite imagery. How could you accurately visualize a city from above without them? Leonardo da Vinci did so in 1502, in an age when most city maps were angled to show what they looked like to the artist. Vox takes a look at the tools da Vinci may have used to translate his 16th century "street view" to an accurate overhead city map. Just one more thing da Vinci squeezed into his prolific life. (via Laughing Squid)