The Salt Lake City Endowment House, built of adobe, was located on Temple Square in Salt Lake City, Utah. It served as a temporary temple during the construction of the Salt Lake Temple. It was completed in 1855 and razed in 1889. Using original floor plans, photographs, maps, and descriptions by persons who participated in its sacretodal activities, the author recreates its exterior and interior appearance. Floor plans and elevations of the building, prepared especially for the paper, are also included. The events leading to is destruction are chronicled. Finally, the author discusses the building’s influence on subsequent Mormon temple interior design and decoration.