In the beginning of the third Millennium, the environment issues ask for a serious approach. As the cities are the main polluters, the green areas development, protection, and maintenance represent a priority in their management. In March, when spring starts, Urban Focus wants to reconsider the cities as places for living, recreation and care for nature, proposing a link to some case studies in Europe, within European Cooperation in the field of Scientific and Technical Research - COST Action C11.