Giovanni MACIOCCO obtained a degree in Engineering at the University of Pisa and in Architecture at the University of Florence. He is Full Professor of Town and Regional Planning, Director of the Department of Architecture and Planning and Dean of the Faculty of Architecture of the University of Sassari. His works include: Les lieux de l'eau et de la terre, (Lybra Immagine, 1998); Wastelands (Dedalo, 2000); Il progetto ambientale nelle aree di bordo, with Pittaluga P. (FrancoAngeli, 2006), Fundamental Trends in City Development (Springer, 2008), Urban Landscape Perspectives (Ed.) (Springer, 2008), The Territorial Future of the City (Ed.) (Springer, 2008), People and Space. New Forms of… Interaction in City Project (Springer, 2009); Il potenziale urbano dei territori esterni with Sanna G. and Serreli S. (Eds.) (FrancoAngeli, 2009).Silvia SERRELI is a Researcher in Town and Regional Planning at the Faculty of Architecture University of Sassari. She has a Ph.D. in "Urban Planning Methodology" from "La Sapienza" University of Rome and a degree in Civil Engineering from the University of Cagliari. Her works include: Le dimensioni plurali della cittÃ ambientale. Prospettive di integrazione ambientale nel progetto del territorio (FrancoAngeli, 2004), Urban Landscape and an ecology of creativity, in Maciocco G. (Ed.) Urban Landscape Perspectives (Springer, 2008), Derelict places as "alternative" territories of the city, in Maciocco G. (Ed.) The Territorial Future of the City (Springer, 2008), Il potenziale urbano dei territori esterni with Maciocco G. and Sanna G. (Eds.) (FrancoAngeli, 2009).