Urban agglomerations, simply known as urban areas, are human settlements with a high population density and infrastructure of built environment. They are created through urbanization and are categorized as cities, towns, conurbations or suburbs. Urban areas are contrasted with villages, hamlets and the natural environment. They are the result of urban revolution which led to the creation of human civilization with modern urban planning. Urban agglomerations generate favorable environments for human capital development. The process of the creation and development of urban areas is called urbanization. This book covers in detail some existent theories and innovative concepts revolving around urban agglomerations. It provides significant information of this discipline to help develop a good understanding of urban agglomerations and related fields. A number of latest researches have been included in this book to keep the readers up-to-date with the global concepts in this area of study.