a tower in the southeastern section of the Kremlin wall, built in 1495. It is in height. Traditionally, there has always been a bell on top of the Nabatnaya Tower, used for notifying citizens of fires and other misfortunes in the Kremlin or on the Red Square (hence, the name Nabatnaya, which derives from the old Russian word набат - nabat, meaning "alarm" or "tocsin"). In 1680, a bellmaker Feodor Dmitriev cast the so-called Nabatny bell (alarm bell) weighing 150 poods (2.45 metric tons) and installed it on the tower. The bell subsequently broke and was re-cast by Ivan Motorin on 30 July 1714. The sound from this bell served as a signal for the spontaneous uprising of the Muscovites during the plague outbreak in 1771, which would later be called the Plague Riot (Чумной бунт). By the order of Catherine the Great, the tongue of the bell was removed after this incident. The tongueless bell remained on top of the tower for 30 more years. In the early 19th century, it was removed and transferred to the Arsenal. In 1821, the bell was moved to the Armoury, where it remains to this day in the vestibule. Geographical coordinates: . Tsarskaya The Tsarskaya Tower (, translated as "Tsar's tower") is the youngest and smallest tower of all, built in 1680. It is not a tower per se, it is rather a stone terem, a tent-shaped chamber placed directly on top of the wall. Previously, there was a small wooden turret, from which, according to legend, tsar Ivan IV liked to observe what was happening on the Red Square. Hence the name, the Tsar's Tower. The white stone bands around the posts, tall corner pyramids with gilt flags and tent roof topped with an elegant gilt weather vane make the tower look like some structure from a fairy tale. Geographical coordinates: . Spasskaya The Spasskaya Tower was built in 1491 by the Italian architect Pietro Antonio Solari. Initially, it was named the Frolovskaya Tower after the Church of Frol and Lavr in the Kremlin, which is no longer there. The tower's modern name comes from the icon of 'Spas Nerukotvorny' () translated as 'The Saviour Not Made by Hands', which was placed above the gates on the inside wall in 1658 and removed in 1917. The tower is also named for the wall-painted icon of 'Spas Smolensky' () translated as 'Smolensky