The Mausoleum of al-Saleh Najm al-Din Ayyub is located between al-Qasrayn (the two palaces) in al-Mu’izz Street and dates to 648 AH / 1250 AD. Shajarat al-Dur, wife of Sultan Najm al-Din Ayyub, commissioned the structure for her husband after his death in the battle against the Crusaders in Mansura. He was buried in al-Rawda Citadel and later removed to the mausoleum when it was completed.
The dome has an entrance overlooking al-Mu’izz Street. A plaque records the date of the Sultan’s death. The wooden screen enclosure within is an excellent example of Ayyubid architecture.