From a fortress to a safe-deposit box for state funds and war booty to a cell of political figures and then to a museum. Fort of the hands of Kola, which means the fort of the seven towers and also called the towers of the seven towers Yedikule Zindanları.
The fortress of the hands of Cola was built between the years 413 - 439 AD by Emperor Theodosius II. It may be from the two towers built on the wall and from the golden door from which the emperor entered and his victorious sword in the battle and the wall with three towers added to it after the Ottoman conquest of the city. This fort is located on the coastline from the Sai Borno area to the Bakrkoy district in the European section of Istanbul.
The seven towers named after the fort that surround the five-pointed wall are the Southern Beilun Tower, the North Beilun Tower, the Bible Tower, the Artillery Tower, Sultanahmet Tower III, the Treasury Tower, and the Raya Tower.
The use of the fort after the Ottoman conquest for a long time in order to save the state treasury and put the spoils of war and has also been used to imprison many convicts Turks and foreigners are among the well-known people who Qdo their sentences in this fort in the years I use the prison: Emperor Trabzon Roumi City David Komenus Sons, Sultan Osman II, nicknamed Osman the young man who received power, a young man where he was eliminated from power by his incarceration and renewal operations in the fort and killed him in it, the last Abbasid caliph al-Mutawakkil in God fourth, the Crimean Prince Mohammed Garaa.
The fort has been renovated many times and was the most extensive restoration carried out by the restoration team led by the first Turkish architect Tamer Tamer between 1958-1970.
The fortress of the Istanbul Museums Directorate between 1968 and 2004 is used today as a museum and cultural events and concerts are held.