The buildings and cultural landscapes of the Modern Movement from the mid-twentieth century are among the most under-appreciated and vulnerable aspects of Prince George’s County’s heritage. Since the 1980s, an increasing campaign of demolition and alteration has eroded the physical fabric of the County’s recent past with little consideration of its community importance, design significance, or role in a sustainable future. Identifying these properties and exploring their architectural and cultural significance is the first step to increasing awareness of their merits and fostering advocacy for their preservation.