Al-Muaini Mosque is located in the city of Damietta in Egypt, built by the Damietta merchant Muhammad bin Moeen in the year 710 AH (1310 AD) in the time of Al-Qalawun. It is characterized by the magnitude of the building, the height of the wall, the minaret, and inside the mosque a shrine surrounded by a wooden cabin made in the style of Arab mashrabiyas, and it was erected in the past over arches to be high on the waters of the Nile. Underneath the mosque is a cellar and ample space. It is considered one of the rare mosques in Lower Egypt, especially in its planning, decoration and method of construction, as it was built in the Mamluk style and used as a school.

All ceilings have exquisite decoration. It is said that Sultan al-Zahir Baybars was the one who attended the death of Jamal al-Din during his illness in Damietta and was equipped and built for him this place in the seventh century AH.

The Al-Daisy Dome is an important Islamic domes and was built during the Ottoman era.