The fingers of foliage on this bridge in the south of France are layers of mosses, vines, ferns, and other vegetation devised by Patrick Blanc, a globe-trotting tropical botanist based at the French National Center for Scientific Research.

Blanc has explored remote terrain from Thailand to the Andes to gain deeper knowledge of tropical flora, both to serve a career as a research scientist and, since the mid-eighties, to inform the techniques of his vertical gardens.