The idea of a living wall or green facade is as old as architecture itself, prominent in Europe and many other countries around the world. Everyone has seen buildings and homes covered in ivy and while this is literally a living wall, it is apparent that the motivation to allow the ivy to grow was not energy savings at the time. Living walls and green facades are an untapped resource in themselves, the savings from placing a living wall on the south side of a structure can me immense in warmer climates saturated with air conditioning. There are even benefits in cooler climates if the plants chosen are an evergreen variety.