The present collection 'Metropolitan Areas: Past, Present and Future Perspectives' represents a complex material with respect to the cities, urban places, and metropolitan areas. This book may be considered as a course for students and scientists that are focused on the Human Geography, Space and Spatial Planning, Territory and Cities Evolution. The first chapter illustrates very well the wonderful city of Saint Petersburg, Russia. In the second chapter, the sustainability in the metropolitan areas is presented. The details of the challenges and geotechnologies in the urban management were well presented with the study case of metropolitan area of Rio de Janeiro, that is in chapter 3. In the chapter 4, the conservation and revitalization of the historic centers from Italy were analyzed. The transportations and communications in the cities and urban areas of Mures County, Romania were analyzed in detail in the chapter 5. The core indicators, correction factors, and sustainability of the London metropolitan area were treated in the chapter 6. The last chapter is referring to the groundwater vulnerability in the Ruhr region, Germany. This book, combines both theoretical and practical aspects of the analyses of the urban and metropolitan areas. We encourage the readers to study this collection for several aspects: is a scientific book, it has a consistent basis, and it contribute for courses of academic professionals.
