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.
Portrait of Gazi Osman Paşa ca. He was an Ottoman field marshal and the hero of the Siege of Plevna in Although unsuccessful in defending the city, he was awarded the title Gazi ("warrior" or "veteran") as a result of that siege.