Usually refers to churches belonging to the Russian Orthodox Church, which often adopt Byzantine or Russian traditional architectural styles and are famous for their magnificent domes, rich murals, and icons. Design often reflects strong religious culture and historical traditions, and is also an important representative of Russian architectural art. Not only does it play an important role in religious ceremonies, but it is also the center of community activities. Often has exquisite interior decorations, including golden icon screens, delicate murals, and gorgeous chandeliers. In addition, the architectural style and decoration of churches often contain rich religious symbolic meanings and historical stories.