Allen Heritage Guild is a non-profit organization in Allen, Texas with a mission to preserve and promote Allen's Heritage and Spirit. The Guild maintains the Allen Depot / Heritage Center and the Allen Heritage Village and has regularly scheduled hours for see the exhibits and tour the village houses. The Guild is also involved in the preservation of the Stone Dam which is the only known US stone dam built for steam locomotives water supply. The Guild holds special events such as Sam Bass Day, Flag Day and Christmas on the Prairie.