Treehugger Jun 8, 2017
Adding living greenery to our urban buildings in the form of vertical gardens not only helps to beautify the city, but also serves the more practical purpose of producing more oxygen and cleaning the air. In Bogotá, Colombia, we have the world’s largest vertical garden on the Santalaia, a multi-family residential building, covering 33,550 square feet (3,117 square meters), and stretching 9 stories above ground (and 2 below).