Nogent-sur-Seine. Paris. Fontainebleau. These are places that anyone would kill to see. But in Sentimental Education, Flaubert is pretty clear that Paris & co. were hurting at this point in time. Its government was a mess and the people were pretty miserable. Still, Frederick, our boy from the provinces, comes to Paris to fulfill his dreams and ambitions. Good luck with that, Fred.
When Frederick takes Rosanette to Fontainebleau, he is escaping everything going on in the city—not just the riots but also his responsibility and being forced to take action.
Taking Rosanette to Fontainebleau really opens Frederick's eyes about her. Outside of her social circle, she seems pretty dull and selfish.