The prayer hall has 17 aisles which are seperated from each other by rows of columns. The floor of the prayer hall is covered with hand made rugs. These rugs are usually made by women and can take up to 1 year to make each rug.
The arcades surround the courtyard, they form long aisles to protect people from the sun. If the Mosque is full people will pray in the courtyard and the aisles.The pillars of the arcades were taken from carthage where the Roman baths stood.