Ortaköy Mosque (Turkish: Ortaköy Camii), formally the Büyük Mecidiye Camii (Turkish: Büyük Mecidiye Camii, lit. 'Great Mosque of Sultan Abdulmejid') in Beşiktaş, Istanbul, Turkey, is a mosque situated at the waterside of the Ortaköy pier square, one of the most popular locations on the Bosphorus. It was commissioned by the Ottoman sultan Abdülmecid I, and its construction was completed around 1854 or 1856. This structure is symbolic of the district of Ortaköy and is often photographed, as it offers a distinctive view of the Bosphorus Strait of Istanbul and the Bosphorus Bridge.
