<diacritize> Photo credits pages 2 and 3 , clockwise from top left : Massimo Pizzotti age fotostock and Hagia Sophia ; Angelo Cavalli age fotostock ; Alain Caste age fotostock ; 2010 SuperStock ; Engravings by Dore <yor>Photo credits pages 2 and 3 , clockwise from top left : Massimo Pizzotti age fotostock and Hagia Sophia ; Angelo Cavalli age fotostock ; Alain Caste age fotostock ; 2010 SuperStock ; Engravings by Doré 