The autonomous Tatarstan republic is situated in western Russia. The Tatarstan republic has its own capital city. It is Kazan , the capital and major historic , cultural and economic centre of the republic. Kazan is located on the left bank of the Volga River where the Kazanka river joins it , eighty - five kilometers north of the Kama tributary.The city has a beautiful Kremlin . Major monuments in the Kremlin are Annunciation Cathedral and the mysterious Soyembika Tower, named after the last queen of the Bolag canal and Lake Kaban.