Ortaköy is a small square on the Bosphorus shore where a neo-Baroque mosque stands on a stone quay at the very edge of the water, with the towers of the Bosphorus Bridge rising behind it. Cobbled lanes behind the square are lined with food stalls, and craft and trinket sellers thread the side streets. Ferries and fishing boats pass close to shore, and the light shifts all day across the dome and the water.
The mosque is formally the Büyük Mecidiye, built in the 1850s for Sultan Abdülmecid by the Balyan family of court architects, its tall windows cut to pull light off the water. Inside, the panel above the pulpit is the sultan's own calligraphy, and painted landscapes run across the dome and the arches under it. The name means middle village, from its old place among the settlements strung along the European shore. The square is one of the city's liveliest gathering spots, and on a weekend evening it is packed.