Most visitors to Washington, D.C. come looking for monuments and museums. Yet some of the city's most influential buildings rarely appear on sightseeing itineraries. The headquarters of the U.S. Department of Agriculture (USDA) has stood along the National Mall since the 1930s, overseeing policies that affect millions of farmers, forests, food producers, and consumers across the United States. From agricultural research and food safety to rural development and conservation, decisions made inside these walls extend far beyond the nation's capital. Its restrained Art Deco architecture reflects the practical spirit of a federal institution built for purpose rather than spectacle. While tourists often pass by without a second glance, the building quietly represents one of the largest public organizations dedicated to agriculture anywhere in the world. Location: Department of Agriculture, Washington, D.C., USA Landmark: USDA Headquarters (Jamie L. Whitten Building) Theme: G...