The mausoleum comprises the interments of about sixty members of the Saadi Dynasty that originated in the valley of the Draa River. Among the graves are those of Ahmad al-Mansur and his family. The building is composed of three rooms. The most famous is the room with the twelve columns. This room contains the grave of the son of the sultan's son, Ahmad al-Mansur. The stele is in finely worked cedar wood and stucco work. The monuments are made of Italian Carrara marble.
Outside the building is a garden and the graves of soldiers and servants.