A solitary figure crosses the vast open sahn (courtyard) of Ibn Tulun Mosque in the Sayyida Zeinab district of Cairo, captured in black and white. The image highlights the mosque's signature pointed arcade arches, stucco rosette decorations, and distinctive crenellated parapet that runs along the roofline. Ibn Tulun Mosque, built between 876–879 CE by Ahmad ibn Tulun, is one of the oldest and largest mosques in Egypt and among the best-preserved examples of Abbasid-era Islamic architecture in the world.