Constantinople (Greek: Κωνσταντινούπολις, Κωνσταντινούπολη – Konstantinoúpolis, Konstantinoúpoli; Latin: Constantinopolis; Ottoman Turkish: قسطنطینیه, Kostantiniyye; and modern Turkish: İstanbul) was the capital city of the Eastern Roman or Byzantine Empire, the Latin and the Ottoman Empire. It was founded in AD 330, at ancient Byzantium as the new capital of the Roman Empire by Constantine the Great, after whom it was named. In the 12th century, the city was the largest and wealthiest European city.
The city itself remained and prospered as the Muslim capital in the Ottoman period; however, scholars normally reserve the name "Constantinople" for the city in Christian period 330–1453, preferring "Istanbul" for the city's name in later centuries. However, many Western writers have continued to refer to the city by its older name "Constantinople" into modern times. The name "Constantinople" is still used by members of the Eastern Orthodox Church in the title of one of their most important leaders, the Orthodox patriarch based in the city, referred to as "His Most Divine All-Holiness the Archbishop of Constantinople New Rome and Ecumenical Patriarch."
Ortaköy Mosque (Turkish: Ortaköy Camii), officially the Büyük Mecidiye Camii (Grand Imperial Mosque of Sultan Abdülmecid) in Beşiktaş, Istanbul, Turkey, is situated at the waterside of the Ortaköy pier square, one of the most popular locations on the Bosphorus.
The original Ortaköy Mosque was built in the 18th century.
The current mosque, which was erected in its place, was ordered by the Ottoman sultan Abdülmecid and built between 1854 and 1856. Its architects were father and son Garabet Amira Balyan and Nigoğayos Balyan (who also designed the nearby Dolmabahçe Palace and the Dolmabahçe Mosque), who designed it in the Neo-Baroque style.
Within the mosque hang several examples of Islamic calligraphy executed by Sultan Abdülmecid himself, who was also a hattat (master calligrapher.) The wide, high windows let the ever-changing light reflections of the Bosphorus shine in the mosque.
Media related to Ortaköy Mosque at Wikimedia Commons