SAH Archipedia is an authoritative online encyclopedia of the built world published by the Society of Architectural Historians and the University of Virginia Press, and contains histories, photographs, and maps for more than 8,500 structures and places. Currently, the content of SAH Archipedia is drawn from the award-winning book series, Buildings of the United States, and includes histories and thematic essays from twelve of the published BUS volumes. SAH Archipedia will grow in the coming years, as we digitize other published BUS books, as current BUS volumes are completed, and as peer-reviewed, born-digital content is created. While our immediate goal is to have all fifty states represented in SAH Archipedia, U.S. content is only the beginning. We envision SAH Archipedia becoming the comprehensive resource for information on buildings from across the globe.