Interior of the Mohamed Ali Mosque (Alabaster Mosque) inside the Citadel of Salah El-Din (قلعة صلاح الدين الأيوبي) in Cairo, showing the main gilded dome decorated with Ottoman-style geometric and floral patterns, semi-domes, and stained glass windows. A large circular chandelier (Nagueff) with globe lights hangs at low level over the vast prayer hall, with its reflection visible on the polished marble floor. Visitors are visible in the background, giving scale to the monumental interior built between 1830 and 1848 under Mohamed Ali Pasha.