Russian churches often have various recurrent elements in their architecture. The onion dome is for example a recurrent and important element in the architecture of Russian churches. Often Russian churches have also multi-colored filigree ornamental elements. Furthermore the colour white plays an important role in the style of Russian churches. In the past, Russian churches were made out of wood. Many Russian Orthodox churches are distinguished by their verticality, bright colors and multiple domes, which provide a striking contrast with the flat Russian landscape, often covered in snow. The very first churches in Kievan Rus', such as the 13-domed wooden Cathedral of St. Sophia, Novgorod, differed in this regard from their mainly single-dome Byzantine predecessors. The number of domes was