Researchers created Itiner-e, a "Google Maps for Roman Roads," charting the network that linked the expansive ancient empire.
I discovered Google Maps Immersive View by accident looking for directions to a new place in the city and now I can't stop using it with all my route planning.
By 150 CE, the Empire was carved up and maintained by a network of stone/gravel/sand highways stretching 180,000 miles.