The Assumption Cathedral is a monumental centralized temple, executed in the style of late classicism. The foundation of its composition is a square plan base, set on a pedestal and topped with a four-sided domed roof. The altar and narthex are designed as rectangular projections, resembling risalits with pedimented porticos: the eastern one is adorned with pilasters, while the western one features columns. On the side facades, there are four-column porticos of the side entrances with pediments, creating symmetry along both axes of the building. Rectangular openings between the columns, partially false, are arranged in two tiers. The lower windows, noticeably taller, are similar to those located on the flanks of the facades. The decor is characterized by simplicity and large forms. The side walls of the narthex are decorated with rustication, and large rustication frames the flanking windows, visually increasing their size, and ends with a semi-circular arch with small ears and pendants. The strict Tuscan order of the porticos harmonizes with the developed entablature, complemented by small two-tiered consoles, and a wide smooth attic that serves as the base for the dome. Inside the temple, four columns of complex profile support the spherical dome on pendentives. Between the columns and the walls, supporting arches are thrown. The apse features a semi-circular vault, while the other ceilings are flat. In the western part of the temple, two tiled stoves have been preserved, framed by a cornice common to the entire interior.