Returning to Florence, Da Vinci devised a scheme that would make the city more efficient. The main idea was straightening the Arno, likely to make it more geometrically pleasing to work with. He also added that there would be five total main streets, three running perpendicularly over the river and two running parallel to it. This would make the flow of traffic much more efficient and less confusing as there would be no twist and turns. The city limits would be bordered by a wall in the shape of a 11-sided polygon. On the bottom there are 9 names for the 9 gates Da Vinci added on this map, each at a different street and wall intersection except for one. When taking into account all of the different projects Da Vinci did in his lifetime, one may say that this project connected to his idea of a two-level city. This would only increase efficiency along the main streets. Alas, like many other Da Vinci ideas, this idealized city was never built.

Source: “A Schematised Plan of Florence.” Royal Collection Trust, www.rct.uk/collection/912681/a-schematised-plan-of-florence.