In Furore #21 (p. 68-69) we describe a key location of the chase scene in The Red Balloon: the passage Ronce, which used to run between the rue Julien-Lacroix and the rue des Couronnes.
18 and 19 Passage Ronce seen from the rue des Couronnes.
At the end of Jean Dewever’s propaganda doc La Crise du logement (1956), filmed at roughly the same time as The Red Balloon, is a view of the passage Ronce as seen from the rue Julien-Lacroix. The school still exists today; the rest is gone.
