When people come to the médiathèque Emile Zola from the rue Poséidon (from where I took the two photos above), they can see the trees of the boulevard de l'aéroport through the glass walls of the médiathèque.

When they are before the wall, they can also see the people in the library. Moreover they can see the reflection of the cars and the signs in the rue Poséidon. Two streets which are perpendicular to each other seem to make up a single street. The grey car was not under the trees, but rather it was behind me when I took the first photo (landscape).

When I uploaded the photos to my computer, I realized that the people in the library do not appear on them. A mystery to me!