The places that can support biodiversity in the city are very limited. These include remnants of the natural landscape that may have been preserved within cities; open spaces, which, in many cases, can only be of temporary help; public parks and gardens; private gardens and courtyards; some balconies; and some green roofs. The decision to renaturalize the city and to green, among other things, hard squares or completely asphalted streets is the only way for many urban centers to provide a support for biodiversity that depends on the construction of a network that usually lacks nodes. Through the regeneration of ecotones, combinations of species that occur spontaneously in nature, our study is helping to transform streets, squares, and even tree wells into a support structure for local flora and fauna. The introduction of connected islands of biodiversity, such as the stones that allow us to cross a river by jumping between them, has also proven its potential to improve the heat island effect and the scenic quality of the urban space. We have a consulting team of biologists and landscape architects to propose interventions with guaranteed resilience.