With tiny, precise pen strokes and careful cross-hatching, Italian artist Alfred Basha captures the complexity of natural life. His drawings interweave animal figures with flora and fauna. Deer antlers are transformed into trees and craggy mountain ranges
Nagai Hideyuki uses two sketchbooks to create illusions. I was thinking this may be possible to do on the street/buildings with chalk, but in order to view it correctly everyone would have to be the same height, so that probably wouldn't work.