There's a "je ne sais quoi" everywhere outside Paris in France.
I won't pick any particular town, because I'm very proud of them all and I don't want to make anyone jealous.
I just love my entire country, passionately (which involves some love/hate feelings from time to time) and nobody could ever change me in that respect. I am a Frenchman. I both love and hate entire France just the way it is.
In short, you just take a look at France's location in Europe.
https://en.wikipedia.org/wiki/File:EU-France.svg
We're simply the crossroad of all great nations in Western Europe, plus some historical diplomatic ties to Africa and the East, then we're cool in this country. It is a blessing in peace time. We get pretty much anything we want.
The metropolitan territory of the Fr Republic was certainly quite harder to manage when there was wars in Europe. We're no isolated island like Britain. We're very connected by land to all neighbors, so whenever things would get tough, it would go more or less messy.
You may see about that if you're interested in the country's history, which I don't even know in details, myself, because it's been so long and huge, with different points of views by historians, depending on their political sensitiveness. But that's an old, past story anyway.
Overall, it's pretty easy to live in, with "je ne sais quoi" just about anywhere.