About the location (from Wiki):
Ortaköy (literally Middle Village in Turkish) is a neighbourhood, formerly a small village, within the Besiktas district of Istanbul, Turkey, located in the middle of the European bank of the Bosphorus. The Neo-Baroque style Ortaköy Mosque is a beautifully ornate structure, right on the jetty of Ortaköy, bordering the waters of the Bosphorus, and thus highly visible from the passing boats.

Ortaköy Mosque, officially the Büyük Mecidiye Camii (Grand Imperial Mosque) of Sultan Abdülmecid) in Besiktas, 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 Armenian father and son Garabet Amira Balyan and Nigogayos Balyan (who also designed the nearby Dolmabahçe Palace), who designed it in Neo-Baroque style. Within the mosque hang several examples of Islamic calligraphy executed by the Sultan Abdülmecid himself, who was also a hattat (master calligrapher).

Movies shot at this location:

Tere HonE Lagaa Hoon from Ajab Prem Ki Ghazab Kahani
Guruvaram song from Dookudu
Jo Gumshuda song from Mission Istanbul