Day of the Living Wall

Why limit our oxygen-releasing flora friends to the indoors when you can flank them on buildings of all proportions, thanks to the highly-skilled hands of a botanist? Take a step outside to see six amazing living walls from Portugal to London. Slideshow

In 2011, The National Gallery, London honored the Dutch post-Impressionist painter Vincent van Gogh with this living wall selectively covered with over 8,000 plants of 24 different varieties to recreate the artist's painting, A Wheatfield, with Cypresses, which was shown in Trafalgar Square in central London. Via The National Gallery.