On the corner of rue des Petits Carreaux (the northern extension of foodie street rue Montorgueil), this extraordinary mur végétal ("vertical garden") was installed on a 25m-high blank building façade by the modern innovator of the genre, French botanist Patrick Blanc, in 2013. It's since flourished to cover a total surface area of 250 sq meters in greenery. Subtitled Hymne à la Biodiversité (Ode to Biodiversity), the "living wall" incorporates some 7600 plants from 237 different species.