The largest vertical garden in the world has been unveiled in Bogota, Colombia. The Santalaia building is completely covered with a layer of 85,000 plants that span 3,100 square meters. Experts claim that a vertical garden of this size can produce enough oxygen for more than 3,100 people every year, process 1,708 pounds of heavy metals, filter more than 2,000 tons of harmful gases and catch more than 881 pounds of dust.

For details and some inspiring pictures, click here.