Some of the major corners in the circuit of walls were further defended by even larger quadrilateral bastion forts which dominate their surroundings. These include the Borj al-Qari (Borj Belkari or Borj Bel Kari) to the southwest of Bab al-Mansour, overlooking the Mellah, the Borj al-Mars at the kasbah's western corner, the Borj Bibi 'Aisha on its far eastern side, and the Borj al-Ma' near the northeastern corner of the Dar al-Makhzen complex.[1] Borj Belkari was much later classified as a national historic monument in 1932 and was converted in the 21st century into a museum of pottery from the Rif region.[27][28]