This is the living wall that was recently installed at the Conservatory of Longwood. All of the doors lead to individual bathrooms. The wall was incredibly lush and beautiful and I spent a long time talking to a man who was in charge of the maintenance. He told me that it takes 16 days to work from one end of the wall to the other, weeding, cutting back, and dead heading (taking off all flowers so it retains the intensity of solid green!) and then he starts again.