“Crayon the Grids” is a set of data visualizations that show the orientation of streets in various cities. In areas with strong grid structures, like Manhattan, the visualization shows a single color. In places that were not centrally planned, the visualization shows an intricate rainbow patchwork of streets going in different directions. In addition to capturing navigability, the visualization also shows aspects of city history. In cities such as San Francisco, that were formed out of multiple distinct neighborhoods, the boundary lines can be seen clearly.