Today’s cities have way too many discarded bottles and not enough clean air! Why not use one to counter the other? The Tetraforest concept does just that. The design aims to enhance the amount of green areas in cities, by simply using recycled materials. A wall structure is created by connecting waste pet bottles with connection parts made from recycled plastic. Then, vining plants can be attached and thrive on the ever-growing wall! Designer: Noam Son