The study of the European Union has historically been a theoretical battleground. Since the 1990s new theoretical directions such as neo-institutionalism multi-level governance and constructivism have provided a new impetus. However despite these new inroads empirical work has often remained sociologically and empirically underspecified. This volume seeks to bridge the gap between theory and fieldwork by developing an actor-centred political sociology. In doing so the volume engages in a critical dialogue with the constructivist framework and proposes to build on its insights through a sociological hardening centred on European actors. The renewal of European studies through political sociology is only useful if it generates new understandings through empirical observation. This volume seeks to take a new tack on constructivism by asking what it is that Europe constructs by looking at three areas- social spaces and professions policy problems and policies and policy instruments such as the Eurobarometer.