The church of St. John lay near the north east corner of the Hagia Sophia, on the site of the German Fountain, and had also a central plan surmounted by a high dome. After having been used as animals shelter, it was demolished at the beginning of the 17th century. Its material was reused to erect the Sultan Ahmed Mosque.Grèlois, Jean-Pierre (2006), "Note sur la disparition de Saint-Jean au Dihippion", Revue des études byzantines (in French), 64 (64–65): 369–72, doi:10.3406/rebyz.2006.2399
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The church of St. John lay near the north east corner of the Hagia Sophia, on the site of the German Fountain, and had also a central plan surmounted by a high dome. After having been used as animals shelter, it was demolished at the beginning of the 17th century. Its material was reused to erect the Sultan Ahmed Mosque.Grèlois, Jean-Pierre (2006), "Note sur la disparition de Saint-Jean au Dihippion", Revue des études byzantines (in French), 64 (64–65): 369–72, doi:10.3406/rebyz.2006.2399
