Konstantin Thon, Russian architect, designed the Grand Kremlin Palace and Cathedral of Christ the Saviour (b. 1794)
Konstantin Andreyevich Thon, also spelled Ton (Russian: Константи́н Андре́евич Тон; October 26, 1794 – January 25, 1881) was an official architect of Imperial Russia during the reign of Nicholas I. His major works include the Cathedral of Christ the Saviour, the Grand Kremlin Palace and the Kremlin Armoury in Moscow.