<p>With the increase of population in megalopolises of the world we are witnessing pollution and global warming. Wide spread of cities horizontally and vertically is causing global warming too. These contaminants are due to the kind of human behavior to the nature and the misuse of it. Now after damaging human to nature human noticed recently it is not possible to live without nature. We see in architecture, activities in this field of bringing nature back to the life; bionic architectural designs, are some solutions. Vertical garden is an obvious and successful example of that. Which are centers for cleaning of air with high gardens. It solves the problem of land prices and doing well cleaning of air in three dimensions. In this paper, we describe in detail, analyzing the issue and provide a solution for resolving pollution in megalopolises.</p>