Stasov directed construction of a fence around the cathedral in 1832-1833 commemorating the victory in the Russo-Turkish War of 1828-1829, the basis of which was the barrels of cannons taken from Turkish fortresses in Izmail, Varna, Tul'chi, Isakchi, and Silistra, and from the battle at Kulevchi.
The fence consists of 102 bronze cannon barrels, in groups of three, set on thirty-four granite bases.