The 'Nikolskaya Tower' is a tower with a through-passage on the eastern wall of the Moscow Kremlin which overlooks the Red Square not far from the State Historical Museum. The Nikolskaya Tower was built in 1491 by an Italian architect Pietro Antonio Solari. It was named after Nikolaevsky (Nikolsky) Greek Monastery, which is no longer there. In 1812, the top of the tower was blown up by the retreating French army. It was restored in 1816 by an architect Osip Bove. The Nikolskaya Tower was once again severely damaged by the artillery fire in October 1917 and was later restored . In 1935, the Soviets installed a red star on top of the tower.