Initially, The Annunciation Cathedral was a classic cross-domed church with five apses and two side-chapels. The Southern Chapel was consecrated in honor of the Orthodox Boris and Gleb, while the Northern one was consecrated in honor of the the Orthodox Peter and Fevronia. The primary sacred object of the cathedral, which is preserved to this day, is the reliquary containing the relics of the Kazan Primate Gury, who governed the Kazan diocese when the walls were erected. The majestic Cathedral keeps famous personages and historians who considered it honorable to visit. Among those are the Emperor Peter I, Paul I, Nicholas I, Catherine II, Alexander Pushkin, Alexander Radishchev, and Sergei Rachmaninoff. The renowned opera singer Feodor Chaliapin repeatedly sang in the cathedral choir. On the block pavement near the Annunciation Cathedral, a hearth in the form of a semicircle was laid, where a five-tiered bell tower stood until 1920. Twice per year a religious procession from the Annunciation Cathedral to the acquisition point of the Kazan Icon of the Mother of God takes place.