In 1813 the Kazan Cathedral became the home of Marshal Kutuzov's tomb.
Between 1813 and 1815, trophies from the Patriotic War (Russia's advance on Paris following Napoleon's occupation of Moscow) were displayed in the Cathedral. These trophies included the keys from 17 European cities and 8 fortresses. 105 flags and standards from across Europe were also displayed.
In 1837 monuments to Marshal Kutuzov and M.B. Barclay de Tully were built in front of the Kazan Cathedral.
According to the Soviets, the first demonstration of students and workers in Russia took place on the steps of the Kazan Cathedral on 6 December 1876.
In 1932 the Soviets eventually turned the Kazan Cathedral into the Museum of the History of Religion and Atheism.