The article shows the main directions of the architecture development in West Siberia in the 17th and early 20th centuries. Research of the last decades devoted to the artistic and decorative interpretation of stone and wooden buildings is summarized. The mutual effect of their ornaments is noted. It is found that the Baroque style, widely used in the architecture of West Europe and Russia of the 17–18th centuries, is not adequately developed in Siberian cities. Siberian Baroque originated at the beginning of the 20th century, affects mainly religious buildings. In construction of stone residential and public buildings, this style is quite rare.The purpose of this article is to analyze the development of this trend in Siberia. The main focus is on Baroque ornamentation. Baroque elements are widely used in wooden architecture of Siberia in the 19th century. Presently, it draws attention from architectural researchers. The article studies Baroque ornaments in terms of Russian traditions, identifies the relationship between the main architectural styles and customs of wooden architecture and ornaments in Siberia.