Ortakoy Cami Mosque in Istanbul Ortakoy Mosque is considered one of a series of historical facilities that adorn the Bosphorus Strait area. It is also known as Buyukmecidiye Mosque. Its construction was ordered by Sultan Abdul Majid. In Ortakoy you will find the most beautiful restaurants and luxurious seating areas. Ortakoy Mosque is one of the most important symbols of the city of Istanbul, as it is distinguished by its beautiful architecture dominated by the Baroque style, which is a special urban style that was widely used in European palaces in the seventeenth century.