The building resembles a very large and elaborate mausoleum, and was built in the Byzantine architectural style, with arabesques. The cathedral sits upon a raised platform, above the surrounding grade, and encircled by a stone balustrade. In shape the structure is oblong, with a many-sided annex at the back. A dome rises in the center, fronted by two smaller twisting and leaning cupolas, while a secondary dome, broader and loftier than the central one, springs from the annex. Each summit is crowned by an inverted pear-shaped stone, bearing a triple cross, emblematic of the Trinity.