Vertical Forest is a model for a sustainable residential building, a project for metropolitan reforestation contributing to the regeneration of the environment and urban 1 without the implication of expanding the city upon the territory. It is a model of vertical densification of nature within the city that operates in relation to policies for reforestation and naturalization of large urban and metropolitan borders. The first example of the Vertical Forest consisting of two residential towers of 110 and 76 m height was realized in the Centre of Milan, on the edge of the Isola neighborhood (hosting 900 trees and over 20,000 plants distributed according to the sun exposure of the façade). The creation of a number of Vertical Forests in the city can set up a network of environmental corridors which will give life to the main parks in the city, bringing together the green space of avenues and gardens and interweaving various spaces of spontaneous vegetation growth. The objectives of the intervention are: 1. VF01 is a project for the environmental survival of contemporary cities 2. VF01 multiplies the number of trees in cities 3. VF01 is a tower for trees inhabited by humans 4. VF01 is an anti-sprawl device 5. VF01 demineralizes urban surfaces 6. VF01 reduces the pollution of the urban environment 7. VF01 reduces energy consumption 8. VF01 is a multiplier of urban 1 9. VF01 is an ever-changing urban landmark 10. VF01 is a living ecosystem