Cities bear a name. They are always unique. However, as spaces, cities are places within a powerful framework. They contain a multitude of unequal, overlapping, and interrelated spatial structures that can be profitably analyzed from a sociological perspective. A spatial theoretical perspective on cities allows for a distinction between a logic of differentiation in spaces and a logic of autonomy in cities. This spatial theoretical viewpoint also enables a bridge to be built from sociology to architecture and planning. Against the backdrop of international and interdisciplinary debates about space, Martina Löw combines research on the autonomy of cities with spatial sociological analyses, demonstrating how cities structure social life through space. The range of contributions spans from methodological considerations on spatial analysis to case studies on the fundamentals.