To meet various industry technological, regulatory and strategic changes, most airports have gone through several iterations of terminal builds, expansion/renovation and reconstruction. Over the decades, these changes have radically transformed their landside, terminal, and airside facilities. However, one European airport – Paris Charles de Gaulle Airport (CDG) – has maintained all the various terminal designs for all these eras, providing us with a real-world example of how terminal configurations, airfield-terminal-landside geometries, and passenger facilitation have evolved alongside industry changes. The airport opened in 1974 and today is one of the busiest airports in the world. The development of CDG’s nine separate terminal buildings/units can be put into two key periods, driven by principal carrier Air France’s strategic market positionings.