The following is a list of towers of the Moscow Kremlin. The Kremlin Wall is a defensive wall that surrounds the Moscow Kremlin, recognizable by the characteristic notches and its towers. The original walls were likely a simple wooden fence with guard towers built in 1156. The Kremlin is flanked by 19 towers with a 20th, the Kutafya Tower, not part of its walls. Borovitskaya The Borovitskaya Tower () is a corner tower with a through-passage on the west side of the Kremlin. It is named after Borovitsky Hill, one of the seven hills Moscow is standing on. The tower was constructed in 1490 on the spot of an old Kremlin gate by Swiss-Italian architect Pietro Antonio Solari (Petr Fryazin, from or as Italians were called at that time) by order of Vasili III of Russia. In 1658 by orders of tzar Aleksey I of Russia the tower was renamed to Predtechenskaya (from the Russian word предтеча, the forerunner) after the Church of John the Forerunner, which was later destroyed during the construction of the Kremlin Armoury (Oruzheynaya Palata). The new name, however, never became popular. In 1812, the tower was damaged by an explosion staged by the retreating French army. In 1817-19, the tower was restored by architect Osip Bove. In 1935, the Soviets installed a red star on top of the tower. Following the closure of the Spassky Gate in Red Square to all traffic at the end of the 1990s, the Borovitsky Gate became the main vehicle passageway. Together with the star, its height is . Geographical coordinates: . Vodovzvodnaya The Vodovzvodnaya Tower () is a corner tower on the southwestern side of Kremlin, overlooking the Moskva River. It was built in 1488 by a Swiss-Italian architect Antonio Gilardi (also known as Anton Fryazin). Initially, the tower was called the Sviblova Tower (Свиблова башня) after the Sviblov boyar family, who had lived in a house adjacent to the tower from the Kremlin's side. The tower was renamed to Vodovzvodnaya in 1633 after the installation of a water-supplying machine inside the tower ("vodovzvodnaya" may be translated as "water-lifting"). In 1805, the Vodovzvodnaya Tower was dismantled due to its dilapidation and built once again. In 1812, the retreating French army blew it up. The tower was restored in 1817-1819 by architect Osip Bove. Its height is . Geographical coordinates: . Blagoveschenskaya The Blagoveschenskaya Tower (), known in English as