Milan is one of the most polluted cities in the world, and the Bosco Verticale project aims to mitigate some of the environmental damage that has been inflicted upon the city by urbanization. The design is made up of two high-density tower blocks with integrated photovoltaic energy systems and trees and vegetation planted on the facade. The plants help capture CO2 and dust in the air, reduce the need to mechanically heat and cool the tower’s apartments, and help mitigate the area’s urban heat island effect – particularly during the summer when temperatures can reach over 100 degrees.
The two towers measure 260 feet and 367 feet tall respectively, and together they have the capacity to hold 480 big and medium size trees, 250 small size trees, 11,000 ground-cover plants and 5,000 shrubs (that’s the equivalent of 2.5 acres of forest). The types of trees were chosen based on where they would be positioned on the buildings’ facades and it took over two years of working with botanists to decide which trees would be most appropriate for the buildings and the climate. The plants used in the project were grown specifically for the building, pre-cultivated so that they would gradually acclimate to the conditions they would experience once placed on the building.