Ortaköy Mosque was built by Sultan Abdulmecid in 1853.
This mosque is located in Üsküdar district of Istanbul.
It is located at the starting point of the Bosphorus which connects Marmara with the Black Sea between the Dolmabahçe Palace and Kabataş shore in Beyoğlu district.
source:
http://www.anews.com.tr/gallery/turkey/3-spectacular-istanbul-mosques-along-bosphorus/6