It comprises a roof of carved and painted cedar wood supported on twelve columns of carrara marble, as well as walls covered in elaborate geometric patterns in "zellij" tilework, Arabic calligraphic inscriptions, and vegetal motifs in carved stucco. The chamber also contains the graves of his close family members and some of his successors, many of which are covered with horizontal tombstones of finely carved marble. His chamber is adjoined by two other rooms, the largest of which was originally a prayer room, equipped with a "mihrab", which was later repurposed as a mausoleum for members of the Alaouite dynasty. The medina holds the tombs of the seven patron saints of the city, which are visited every year by pilgrims during the week-long "ziara" pilgrimage. A pilgrimage to the tombs offers an alternative to the "hajj" to Mecca and Medina for people of western Morocco who could not visit Arabia due to the arduous and costly journey involved. This ritual is performed over seven days in the following order: Sidi Yusuf ibn Ali Sanhaji, Sidi al-Qadi Iyyad al-Yahsubi, Sidi Bel Abbas, Sidi Mohamed ibn Sulayman al-Jazouli, Sidi Abdellaziz Tabba'a, Sidi Abdellah al-Ghazwani, and lastly, Sidi Abderrahman al-Suhayli. Many of these mausoleums also serve as the focus of their own zawiyas (Sufi religious complexes with mosques), including: the Zawiya and mosque of Sidi Bel Abbes (the most important of them), the Zawiya of al-Jazuli, the Zawiya of Sidi Abdellaziz, the Zawiya of Sidi Yusuf ibn Ali, and the Zawiya of Sidi al-Ghazwani (also known as Moulay el-Ksour). The old Jewish Quarter ("Mellah") is in the kasbah area of the city's medina, east of Place des Ferblantiers. It was created in 1558 by the Saadians at the site where the sultan's stables were. At the time, the Jewish community consisted of a large portion of the city's bankers, jewelers, metalworkers, tailors and sugar traders. During the 16th century, the Mellah had its own fountains, gardens, synagogues and souks.