The Sabancı Central Mosque, opened in 1998, is the largest mosque in Turkey by capacity and one of the largest in the Middle East: up to 28,500 worshippers fit beneath its central dome and four semi-domes. From the river embankment it presents a complete riff on classical Ottoman architecture — six pencil minarets, a stepped dome cascade, deep arcades — at a scale that classical Ottoman architects never quite attempted.
Inside, the prayer hall is light and surprisingly serene given the size. Calligraphy bands run high on the walls; the central chandelier is hand-blown Bohemian glass. Visitors are welcome outside of prayer times; dress modestly and remove shoes at the entrance. The view back across the river from the mosque's courtyard is the best in the city, especially at sunset.