Drawing on cutting-edge theoretical work, leading geographers reveal that cities are not isolated objects of study; rather, they are dynamic, global–local assemblages of policies, practices, and ideas. Through empirical examples from Europe, North America, South America, Africa, Asia, and Australia, contributors bring to light the methodological challenges that researchers face in the study of an urban–global, territorial–relational conceptualization of cities and suggest new approaches to understanding urbanism in a networked world.