When watching that scene, three things stood out to me in that regard:
The café where Charles Xavier and Magneto meet is called "Les Vieux Copains", which translates into "The Old Friends". This is an obvious callback to Xavier repeatedly calling Magneto his "old friend", and wrapping their friendship nicely, when Erik had told him to "cut the old friend shit" earlier in the movie;
When the camera zooms out, the street seen at the bottom right is the "Rue de la Paix", literally "Peace Street". This, I think, is a way of showing Erik and Charles themselves reached peace, as well as the world towards mutants. This seems a bit too obvious to have been a generic French street name some prop guy had to choose at random;
Also, when the camera zooms out, I'm pretty sure the building with a domed roof seen on the left is the Panthéon, which is a monument honoring very specific people who impacted History in a great way. While there might not be a specific X-Men connection there1, I saw it as a final homage to the fallen heroes, who tried their best to protect the world.2
1 For the record, while all the people currently in the Panthéon are French, it's not actually mandatory. As such, a foreign mutant could possibly be buried there.
2 Yes, it's also a way to throw in an easily recognizable Paris monument, but that very building carries more significance relevant to the plot than, say, the Sacré-Cœur or the Eiffel Tower, though the latter is also to be seen.