The Baroque Cathedral, built in the times of Peter the Great, is a unique building for Kazan and one of the most important architectural monuments. Right from the entrance an amazing view over the city opens. There is also an observation deck on the roof. The inner décor of the Cathedral is also quite unusual: stucco work in the form of bunch of grapes and other redundancies of baroque architecture, but the main attraction is, of course, stained glass windows with crosses. The altar part still keeps the old murals including a not renewed image of saint Peter and Paul; many old icons are stored in the Cathedral as well.