Between Sevilla and Granada, in Andalusia, Spain, runs a two-lane highway which crosses over a river call Rio Frio (Cold River).
There exists there today three bridges at that river crossing; Roman, Medieval (both no longer used), and modern. The Roman bridge still looks great, the Medieval looks crude by comparison to the Roman, and modern one everyone uses has no personality at all.
I would love to see that. Some of the stuff they built is almost scary how well it held up. Thanks.
What is interesting is the knowledge that was probably lost from the fall of Rome. This is probably why the Medieval was so bridge was so crude.