SAH ARCHIPEDIA | A Peer-Reviewed Encyclopedia of U.S. Architecture from the Society of Architectural Historians SAH Archipedia is an authoritative online encyclopedia of the U.S. built environment organized by the Society of Architectural Historians and the University of Virginia Press. It contains histories, photographs, and maps for over 20,000 structures and places. These are mostly buildings, but as you explore SAH Archipedia you will also find landscapes, infrastructure, monuments,