Canon in architecture of orthodox church of St. of God’s Wisdom – Hagia Sophia in Bialystok

In this article, the author analyzes the architectural features of the orthodox church of St. of God's Wisdom - Hagia Sophia in Bialystok. The author identifies the features of the building's architecture and relates them to the canons of designing this type of facility. Another point of reference is the archetype of Byzantine architecture - Hagia Sophia from Istanbul (former Constantinople). The aim of the research is to answer the questions whether the design of the temple in Bialystok has preserved the principles of shaping the form and detail of Byzantine architecture and whether the object has an original character. The research methods used by the author are the "in-situ" method and the analytical-comparative method.