Cities have always been magnets attracting a growing number of citizens. The unprecedented pace of urbanization has recently witnessed a historic shift of human population with the majority now living in cities. The growth of cities in this age of globalization raises many opportunities and challenges, concerning the quality of life, poverty, sustainability, environmental degradation and urban competitiveness. All of these issues and problems deserve our attention. This course examines cities from different perspectives: historical, social, economic, cultural and environmental. At the global level, an overview of different types of cities, city networks as well as the impact of globalization on urban development will be addressed. At the regional level, it attempts to explore the emergence of cross-border economic regions and urban corridors in Mainland China. At the local level, the internal dynamics of cities will be addressed. By adopting a holistic approach, a variety of cities will be chosen as case studies for understanding urban development. While the coverage will be broad and global, case studies of Mainland China and Hong Kong will be emphasized. Lectures will be supplemented with videos.