With climbing plants green canopies can be led to form a "gallery" on most outer walls. Vines are often used for this and you can find many suggestions and examples for this on the page "Grapevine gallery" in the area "of climbing plants".
FassadenGrün is a commercial provider of wire rope systems made of high-grade stainless steel in Germany, Europa and overseas. Information about: Which plants are suitable, are climbing/growing aids necessary, should they be made of wood or metal? Here you will find all the information needed from one provider.