Since the 1950s, Catalonia has remained one of Europe’s most popular tourism destinations. Throughout this period, however, Catalonia’s presentation to the world has changed dramatically. In this article, I explore claims to authenticity in Catalan tourism attractions and promotion, which emerged as shrewd marketing language in the increasingly competitive tourism market of the 1980s and 1990s. The resulting Catalanisation of the region conditioned the international projection and reception of the region as historically, linguistically, culturally, and politically different from Spain and, indeed, the rest of the world. This new image of the region relied on and sustained an ontology of marketable and consumable national difference that resonates far beyond Catalonia’s borders. This research shows how ideas of consumable authenticity functioned as an important mediator between nationalism and globalisation, popularised nationalist thinking without the influence of committed nationalist actors, and helped scholars to understand the sustained importance of the nation-state as a unit of international politics despite its shifting meaning, function, and power from the 1970s to today.