Biocities are urban environments that use nature-based solutions that promote life and biodiversity. Biocities apply the Circular Bioeconomy principles with the aim of becoming Zero Emissions cities, as proposed by the EU by 2050. The field of application of Circular Bioeconomy in cities includes the use of materials from forests (especially, wood for construction or as a raw material for the industrial sector), marine products, the development of biomaterials using nanotechnologies, the development of a new urban metabolism using renewable systems in the field of energy or water cycles, the production of food in cities or the development of urban biodiversity and other environmental services related to urban forests and green spaces.

All of these initiatives have a direct impact on the well-being of people in cities, both on air quality, global health and citizen empowerment.