This article reconsiders the development of Fascist architecture throughout the late interwar period. It pays especial attention to the structures erected for the most significant international expositions held, or planned to be held, between 1933 and 1942, in order to identify significant trends in Party-sponsored design. It argues that the ‘dynamism’ of Fascist design was a consequence of the regime's preference for an increasingly imperial tone which developed in direct proportion to its increasingly imperial identity. It points to Piacentini and Pagano's Italian Pavilion built for the 1937 Paris Exposition, the first national pavilion constructed following the May 1936 proclamation of empire, as a significant flashpoint in the tension between Fascist interpretations of modern and classical design. This article concludes that the often-overlooked world's fair buildings can be viewed as crystalline distillations of the stylistic experimentation which defined the broader Fascist building programme both in Italy and abroad.