Spassky tower was built in 1491 by the Italian architect Pietro Antonio Solari. Originally it was called Frolovskaya, as the nearby church was located in the name of the Holy Martyrs Frol and Laurus
350 years ago, on April 26, 1658, the Frolovskaya Tower of the Moscow Kremlin, under the decree of Tsar Alexei Mikhailovich, was named Spasskaya.