Istanbul, Turkey - July 20, 2015: Sultan Ahmet camii or Blue Mosque was built between 1597 and 1616 by architect Sedefkar Mehmet Aga for Sultan Ahmed the first. The Mosque was built in front of Hagia Sophia and it's called Blue Mosque because it's interior was decorated with thousands of blue tiles. A lot of people around. Istanbul, Marmara, Turkey.