Al-Morsi Abu Al-Abbas Mosque, although it’s an octagonal shape, but the patron is intended to be regular in shape from the within, where the length of every of the ribs reaches 22 meters, it’s distinguished by the colour of the cream and therefore the inscriptions and decoration that cover the substitute stones from all directions from the skin in equal proportions. Entering from the northern or eastern entrance, we are going to find that the decorations surround all the inside corners furthermore, as they cover the white marble floors, walls with an exquisite mixture between artificial stone from the highest, and from the underside covered with mosaic, with a height of 5 meters, and at the highest of the roof of the mosque, and at a height of 17 meters We see Arab inscriptions, arabesques and mosaics, mashrabiyas, and also the vents that decorate the mosque from all directions.