"First city walls of Istanbul discovered in Yenikapı
One section of the lost city walls, dating back to the period when Roman emperor Constantin had first founded Istanbul (Constantinople), was discovered Archeologist Metin Gökçay in Yenikapı Istanbul old town. Alongside Constantine city walls, Gökçay also found remains of the first settlement on the coast of Istanbul, the neighbourhood of Elephterion, as well as remains of the Port of Elephterion Including its 1600 year-old wooden legs, dating back to the fourth century, now located as 400 metres behind the coastal line. "
More:Hürriyet - First city walls of Istanbul discovered in Yenikapı