Very interesting material has been published on Twitter by David Montañez, who compiled two maps of the Iberian Peninsula: Roman and Modern. As it turns out, modern highways and roads largely coincide with those built by the Romans.
For some, it may not be anything new, but it is worth emphasizing that many Roman routes and roads were used long after the fall of Rome. Moreover, some of today’s Spanish cities were founded by the Romans and were connected by roads by them. The distribution of communication routes was so good that the “successors” of the Romans simply used them, and then eventually built up new layers. In this way, Spanish highways were created, where asphalt unfortunately covered some historic Roman remains.