The design quality of The Sign is not only in its openness to people. Indeed, it is not just a real estate regeneration project, but also an example of environmental sustainability applied to architecture. This is evidenced by the fact that the first lot received the BiodiverCity certification in 2021: the first time this recognition has ever been awarded to any development in Italy. The certificate, granted after a careful evaluation, aims to promote the importance of biodiversity in real estate projects as a driver of well-being for both the environment and people. Among the numerous examples for The Sign, there are spaces designed for butterflies and bee nests to enhance local biodiversity. While the certification process for the second construction lot is underway, The Sign is already a model of quality and constructive innovation. With the goal of creating workplaces where people are happy to go every day, Progetto CMR has designed common areas and social spaces for necessary breaks. Great importance has also been given to terraces, where it will be possible to work outdoors and organize events.