Pietro Antonio Solari (Latin: Petrus Antonius Solarius;[1] c. 1445 – May 1493), also known as Pyotr Fryazin (Russian: Пётр Фрязин), was an Italian architect[2] and sculptor.
(Borovitskaya Tower) It was built in 1490 and its architect was Pietro Antonio Solari. He was one of those Italian architects and urban engineers invited by the Great Duke of Muscovy, Ivan the Third to participate in the reconstruction of the Moscow Kremlin.