Beykos was a town with vineyards and gardens. Its population was mainly timbermen, fishermen and gardeners. Its water and air were beautiful. There was a swordfish fishery in front of its pier. Its market and bazaar was adorned with tall trees. Legend says that the district’s name was “binkoz” (thousand walnuts) due to the number of large walnut trees around Ten Fountains. “Koz” means walnut. Another legend: It is related to the presence of Kocaeli Beys who settled in the region. The combination of the word Bey and the word Kos (village in Persian) formed the word Village of Beys (Beykos). Its fountain built by the Customs Fiduciary of Mahmud I., İshak Aga and ten spouts of which still provides water, the Behruz Aga Bath, Serbostani Mustafa Aga Mosque, Hadji Huseyin Aga Timekeeping House, Paraskevi Church, Abraham Pasha Grove, its wooden houses that can only be seen in black-and-white photographs from a century before makes Beykoz a district where history is warmly alive in this distant part of Istanbul.