In 1502, Leonardo created a map of Cesare Borgia’s stronghold, a town plan of Imola in order to win his patronage. When presenting to Cesare, the leader must have been in awe. People at the time had rarely seen maps. Maps themselves held a magical feel to them at the time as it would have seemed as if one was holding a piece of land in the palm of their hands. Cesare hired Leonardo upon seeing the map as his chief military engineer, architect.
Oronce Fine, Mappemonde en forme de cœur montrant la Terre australe Recens et integra orbis descriptio, Paris, 1536. Carte gravée sur bois et aquarellée (51 x 57 cm en 2 f. assemblés) BNF, Cartes et Plans