The first wooden buildings on the territory of the future Kazan Square were the hospital, the barracks under it and the Church of the Nativity of the Virgin. The name of the square arose in the beginning of the XIX century, in connection with the erection of the brightest monument of Russian architecture - the monumental Kazan Cathedral - on the site of the disassembled Nativity of the Virgin church. At the end of the war in 1812, the cathedral where M.I. Kutuzov and where the standards of the defeated Napoleonic army and the keys of the Russian cities taken by the Russian army were collected, began to be called the "pantheon of Russian glory." And in 1837 on the square in front of the cathedral solemnly opened the monuments to the greatest commanders of MI. Kutuzov and M.B. Barclay de Tolly. Kazan Square entered the history and as an arena of performances against the oppression of power. The first Russian demonstration, in which proletarians participated, was held at the Kazan Square, at the end of 1876. From the steps of the cathedral, the fiery speech of G.V. Plekhanov, that under the Soviet system gave rise to the renaming of Kazan Street, adjacent to the square, to Plekhanov Street, and in memory of the revolutionary performance the colonnade of the Kazan Cathedral was marked with a memorial plaque.