flourished 6th century a.d., Byzantine engineer. He was one of the architects of Hagia Sophia (originally an Orthodox cathedral and currently a museum in Istanbul, Turkey).
Hagia Sophia – Wikipedia
Secrets of the Hagia Sophia | Travel + Leisure
Hagia Sophia | Istanbul Attractions | Big Bus Tours
Hagia Sophia | History, Facts, & Significance | Liberal Dictionary
Hagia Sophia Museum – Istanbul Tour Studio – Istanbul Guide