Blue Mosque or The Sultan Ahmed Mosque is an historic mosque in Istanbul. The mosque is popularly known as the Blue Mosque for the blue tiles adorning the walls of its interior. It was built during the rule of Ahmed I.
Room of Sultans in "Topkapi Palace Museum" - "Topkapı Sarayı Müzesi" in Turkish. That Palace covers a large area in Istanbul and was the primary residences of the "Ottoman Sultans" for about 400 years of their of total Reign.