Saints Peter and Paul Cathedral is the most ornate Baroque church in Kazan, a tall white building covered in deep-relief stucco of flowers, fruit, and angels in a style known as Russian Naryshkin Baroque. The free-standing bell tower beside it is almost as elaborate.
The cathedral sits a short walk east of the Kremlin on a quiet pedestrian street. The interior, restored after Soviet-era closure, holds an elaborate gilded iconostasis. Entry is free and modest dress is expected. Open for services and visitor hours most days.