Sasha Trubetskoy is a “geography and data nerd” who makes data visualisations and maps. His Roman Roads project styles the Ancient Roman road network as modern transit maps.
![](https://lettersremain.com/wp-content/uploads/2023/08/image-1024x771.png)
That’s the full Empire, as of ca. 125 AD. Trubetskoy also made similar maps for Britain, Italy, Gaul and Iberia. I recommend clicking through and reading about the process, including how he developed a framework for choosing twenty colours at various levels of contrast and accessibility.