This master’s thesis examines the histories of Columbia’s South Carolina Confederate Relic Room and Military Museum, Charleston’s Museum at Market Hall, and Greenville’s Museum and Library of Confederate History to promote the Lost Cause. The Lost Cause has prevailed as a popular memory of the South, veiling the accurate representation of the antebellum South as a society reliant on slave labor. This study argues that these three museums and others like them indoctrinate visitors with the myth of the Lost Cause through exhibits, education, and community outreach. The Relic Room was established by Columbia’s local United Daughters of the Confederacy (UDC) chapter in 1896, gained funding through the state a decade later, and eventually came under the control of the state over the next several decades. Following a reunion of the United Confederate Veterans in Charleston, the local UDC chapter established the Museum at Market Hall in 1899 in a building that was central to Charleston’s economic and social history, which centered around the African slave trade. As the brainchild of the local camp of the Sons of Confederate Veterans (SCV), Greenville’s museum was founded in 1993 and was part of a major shift of Confederate memorial organizations away from outright support of white supremacy toward the stance that the Lost Cause narrative represented "heritage, not hate." The persistence of the Lost Cause in museums indicates that many white southerners continue to wrestle with conflicting memories and narratives of the Civil War, and museums that perpetuate the myth only further exacerbate the white southern struggle to acknowledge a dark past of slavery and exploitation.