This paper contributes to the ongoing discussion of the historical geography of modernity. It is argued that the exclusive focus on social theory has detrimental effects on the appreciation of normative political concerns and that it ignores the resurgence of normative political theory. Habermas's concept of the public sphere, and its place within his theoretical and empirical studies, is, by contrast, commendably concerned with linking the social and historical work with normative political theorising, and its usefulness for geographical investigation is applauded. However, the criticisms directed from, in particular, communitarian political theorists and contextualist social researchers would seem to make his attempt to bring a ‘strong’ theory of public political life back within the remit of a reconstructed social theory less plausible. One set of responses to this criticism comes in the form of the attempt to build geography into this normative political theory, turning public spheres into public spaces; Arcndt's political theory, in conclusion, is thus held to be a significant contribution to the historical geography of modernity.