Computer Model of the Hagia Sophia - Project by Princeton University in 1996. Technical details of producing the model, some photographs.
Hagia Sophia - Great Buildings Online provide photographs, 3D model, choice quotations and bibliography of the Byzantine masterpiece designed by Isidoros and Anthemios at Istanbul, Turkey, 532-7.
Ravenna Mosaics and Monuments - MW&V sell this CD-Rom guide to the famous mosaics of Ravenna in four languages. Sample screen shots on-line.
San Vitale, Ravenna, Italy - This octagonal church, built 526-47, is among the finest and least altered of all Byzantine buildings. Great Buildings Online provides a description and bibliography.