Rows of worshippers stand in congregational prayer (Salah) inside Sultan Hassan Mosque in Cairo, a monumental Mamluk-era structure built between 1356 and 1363 AD. The image captures the mosque's massive stone interior, soaring arched qibla wall, and hanging chandeliers casting warm light across the prayer hall. Sultan Hassan Mosque is considered one of the finest examples of medieval Islamic architecture in the world, located adjacent to the Citadel of Cairo in the historic Al-Khalifa district.