Against the backdrop of the simultaneous resurgence of nationalism and the erosion Wendy Brown names “waning sovereignty,” the seminar tracks both contemporary speculations and historical theorizations of architectural nationalism. Nationalism is often portrayed as an action—the formation, consolidation, or demarcation, of state or ethnic territory—as well as a set of credos and sentiments. It is political philosophy, territorial instrument, and an atmosphere of beliefs and ideologies. Accordingly, this seminar considers nationalism as an active modifier that inflects thought and perception, forms political subjects, and alters architecture and spaces. With readings from within architecture and architectural history—and across a range of other disciplines—this seminar, then, probes the matter of nationalism by asking what nationalist discourses activate spatially, materially, and infrastructurally.