There are lot's of city centres in Europe in France, Italy, Belgium etc. where entire neighborhoods survived, and they look great.
You're totally right that France/Italy/Belgium all have amazing towns to visit. But in case someone is looking for a random tip elsewhere: Český Krumlov (https://sv.wikipedia.org/wiki/%C4%8Cesk%C3%BD_Krumlov), which is in today Czechia (handy in case you happen to visit Prague), but used to have a large German population before WWII. It looks wonderful, perhaps the most perfect Medieval town I've seen.
i imagine a similar trend must exist for most of the European cities. people's aesthetic usually rejects the new, but recognizes the beauty once it is seen as old and classic
The same complaint was made when the "pijp" was build, al buildings are the same. It was originally meant for poor people, now one of the hotspots: https://upload.wikimedia.org/wikipedia/commons/c/c5/Revoluti...
But stil the brownstone building have way more ornaments, arches & other details intended to make it pretty then any modern flat. I have a real hard time believing we will every think of the grey Paris banlieus as pretty: https://static01.nyt.com/images/2013/05/15/business/GHETTO-1...