Wall of Nature
The exact number of plants living on the outside of Madrid’s Caixa Forum Museum is unknown. Estimates range from 15,000-17,000, but it depends on the season. Under normal circumstances, its vertical garden – botanist Patrick LeBlanc’s Le Mur Végétal – is a verdant green. Yet, under Vietnamese photographer Viet Ha Tran’s (b. 1981) lens, it becomes something else entirely – like stepping into a hallucination.











