Since ages this balcony has intrigued me. The metal grid rests on metal feet in the shape of a ball. There are four of them: on at each corner. At some moment in time a tennis ball has joined the quartet. This fifth ball, the one in the middle, has the perfect size: it got squeezed under the lower bar and stayed put. The weathering and air pollution has given the ball a perfect camouflage and makes it hard to distinguish from the other balls.
There is something going on with balls in this street. One block down the road, the church Saint-Rémi is covered with colorful footballs: see post below.