Sts. Sergius and Bacchus, Istanbul, Exterior view
N. V. Artamonoff, Exterior view of Sts. Sergius and Bacchus, Istanbul, 1938, MS.BZ.012-02-03-05-020-004, Robert L. Van Nice Fieldwork Records and Papers, ca. 1936–1989, Image Collections and Fieldwork Archives, Dumbarton Oaks, Trustees for Harvard University, Washington, D.C.
Image from http://atom.doaks.org/atom/index.php/exterior-view-56