The oldest surviving houses in Marrakesh date from the 16th or early 17th century during the Saadian period. A number of such houses still stand today in various states of preservation. These include the Dar Cherifa (formerly known as Dar Ijimi), the Dar al-Mas'udiyyin (partly ruined), and the Dar al-Masluhiyyin (known also as Ksour Agafay). The Mouassine Museum also contains an example of a restored Saadian-era "douiria", or upper-floor guest apartment. Dar Cherifa and the Dar al-Mas'udiyyin in particular have very rich decoration which has strong similarities with the stucco and wood decoration of the Ben Youssef Madrasa, indicating that they were probably built around the same time (second half of the 16th century). They continue the traditional forms of earlier Marinid houses, with the twelve pillar-courtyard arrangement, carved wooden lintels in the galleries, and carved stucco decoration with "sebka" motifs around or above the arches. Unlike the Fes houses, however, the galleries have only one tall level, though in some cases a second story of rooms is nonetheless integrated behind the gallery façades. The large central openings of the galleries once again allow for unobstructed view of the tall and decorated doorways leading to the surrounding rooms. In these houses these formal doorways are even more ornate and consist of lambrequin arches with muqarnas-sculpted intrados.