is one of the oldest towers, and doubles as citadel and the keep tower (donžon). It has an eight-sided base with a circular spire rising from it and a square interior. The next tower to the west, tower 2, is completely circular in shape. The third tower has a square base, with the open side facing the dungeon tower to the north. On the top floor is a terrace that overlooks the Danube and the entrance to the Iron Gate gorge. Down the slope from tower 3 is tower 4, which also has a square base. The ground floor has a Serbian Orthodox chapel that was built into the tower, rather than being added later. The last tower along this wall, tower 5, is the only tower to remain completely square. All towers were originally rectangular, but the Ottomans upgraded them and additionally fortified them against the artillery. The top tower along the front wall of the forward compound, tower 6, has a square base which was reinforced with a six-sided foundation. Working west, the square base of tower 7 was reinforced with a circular foundation. Tower 8, on the upper side of the front portcullis, has an irregular, but generally square, base. It is also the shortest of the first nine towers. Guarding the other side is tower 9, which has a square base reinforced by an eight-sided foundation. The last tower is the cannon tower. It has only one floor and is the shortest of all nine towers. It was built with an eight-sided base and cannon ports to help control traffic on the Danube. Tower 10 is almost identical to the three artillery towers added to Smederevo fortress. The cannon tower is also the youngest. It used to be on dry land, but with the formation of the artificial Lake Đerdap in the late 1960s and early 1970s, the water level rose so today it protrudes into the Danube. It is also called the White Tower. On 21 August 2022, a lightning struck the Hat Tower. Built on the cliffs, its top is the most protruding point of the compound, at above the river. The roof shingle was damaged, and the electronics in the majority of the complex was fried. 2014-2019 reconstruction The area surrounding the fortress was declared a touristic area by the government in 2011, covering , within the Đerdap national park. The Government of