Contents : Hagia Sophia - The History of Hagia Sophia - Plan of Hagia Sophia - The Architecture - The Mosaics in Hagia Sophia - Baptistery - Treasury - Changes in Hagia Sophia During the Turkish Era Changes in the Courtyard of Hagia Sophia - During the Turkish Era Chora - The History of Chora - The Architecture - The Importance of the Mosaics and Frescoes of Chora - Plan of Chora - The Mosaics in Chora - Plan of the Parecclesion - The Frescoes of the Parecclesion - Tombs - Bibliography