Kertoporta Gate (Istanbul Metropolitan Municipality)

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According to the historian Doukas, on the morning of 29 May 1453, the small postern called Kerkoporta was left open by accident, allowing the first fifty or so Ottoman troops to enter the city. The Ottomans raised their banner atop the Inner Wall and opened fire on the Greek defenders of the peribolos below. This spread panic, beginning the rout of the defenders and leading to the fall of the city.[93] In 1864, the remains of a postern located on the Outer Wall at the end of the Theodosian Walls, between tower 96 and the so-called Palace of the Porphyrogenitus, were discovered and identified with the Kerkoporta by the Greek scholar A.G. Paspates. Later historians, like van Millingen[94] and Steven Runciman[95] have accepted this theory as well. However, excavations at the site have uncovered no evidence of a corresponding gate in the Inner Wall (now vanished) in that area, and it may be that Doukas' story is either invention or derived from an earlier legend concerning the Xylokerkos Gate, which several earlier scholars also equated with the Kerkoporta.