This research studies first, the shifts in political power in Iran that influenced new buildings in Iran through the twentieth century into the beginning of the twenty-first century and secondly, the way that new attitudes from these political shifts then altered pre-existing buildings. This research falls into the field of architectural history. The topics covered are modernist architecture, specifically the museum typology, in Tehran between 1936-2010, and the changing politics in Iran through the twentieth century into the beginning of the twenty-first. This research provides new insights to how architecture in Iran acted as a machine for their political attitudes, and how pre-existing architecture began to shift to meet the attitudes of the current governing body. There are three case studies presented in this research. The first two case studies fall into the time period before the Iranian Revolution and the Iran-Iraq War, while the third case study falls after the wars.