Book excerpt: Urban areas produce a series of environmental problems arising from the consumption of natural resources and the consequent generation of waste and pollution. These problems contribute to the development of social and economic imbalances. All these problems, which continue to grow in our society, require new solutions. This book addresses the many inter-related aspects of the urban environment from transport and mobility to social exclusion and crime prevention. Publishing papers from the Fourth International Conference on Urban Regeneration and Sustainability, the volume includes topics such as: Strategy and Development; Planning; Development and Management; Environmental Management; Planning Issues; Socio-economic Issues; The community and the City; Cultural Heritage; Architectural Issues; Traffic and Transportation; Land Use and Management; Public Safety; Conservation of Resources; Sustainable Transportation and Transport Integration; Depleted Ecological Resources; Environmental Pollution; Energy Resources Systems.