The entire town of Segovia is like this. You're sitting in a town that was built 1000 or more years ago, and people still live in it. Has it been fixed up over the years? Sure. But people still live in structures that are 4-5 times older than our entire country.
The town of Segovia was still using the Roman aqueduct into the 70s.
Your general point is valid. If you go to Paris, like you can't skip the Eiffel Tower, as an example. But there are a lot of non-Paris things to do in France. We met some locals in Madrid on our last night at dinner who told us a bunch of non-touristy places to go. She showed us pictures of the town she lives in, Toro. It's really a totally different world in some of these places.