Kazan is a city in southwestern Russia, located on the banks of the Volga and Kazanka. In the capital of the semi-autonomous Republic of Tatarstan, there is an ancient Kremlin - a fortress famous for its museums and holy places. The Syuyumbike Tower, the blue and gold domes of the Cathedral of the Annunciation, and the flamboyant Juma Mosque of Kul-Sharif are some of the Kremlin's most interesting sights.