The tower has been altered substantially over the years. Early illustrations show that it was originally covered by a conical roof, like similar towers in the Yedikule Fortress and Rumelihisarı fortress in Istanbul. Until its demolition in 1917, a chemise stood at the foot of the tower, supporting the heavy guns and enclosing an area at least three times the diameter of the main tower. Octagonal turrets on the chemise and caponiers at ground level provided flanking fire around the tower. It is unclear whether the chemise was part of the original scheme for the tower or was a later addition.