Living walls aren’t just a wonderful way to brighten up urban spaces—greening grey walls has benefits inside and out. Green walls help protect building façades, reduce noise, and make structures more energy efficient, and they improve biodiversity and outdoor air quality, and our well-being in general. Living walls and vertical gardens have become increasingly popular over the years—thanks to innovative and striking designs by people like Patrick Blanc— and it’s not hard to see why: going green has never been so beautiful.