Architecture

The cathedral represents the Russian-byzantine style churches that were popular in Russia during the 14th century. The specific architectural style is called Russian revivalism which was popular in Russia from mid 19th century to early 20th century. It was built using red bricks, most of which actually came from the Fortress of Bomarsund which was demolished as a result of the demilitarization of the Åland Archipelago after the Crimean War. Approximately 700 000 bricks were recycled from the fortress. These recycled bricks were used in the inner walls of the cathedral. The outer layer of bricks were ordered from a brick factory situated in Leppäkoski. 

On the roof there are 13 gilded flame-shaped domes, which represent Jesus and the 12 apostles. 14th dome rests on top of the bell tower, symbolizing prayers of the people. The domes have been gilded 4 times throughout history, latest being 2004-2007. 

The church is approximately 33 meters tall from the ground to the highest cupola which symbolizes the age of Jesus Christ when he died for our sins.

The cathedral is supported by 4 humongous Doric columns made out of polished granite. Each one was chiseled from a single block of granite which were brought from the coast of Helsinki. All of the building materials, aside from the columns, were transported to the cathedral with a branch line (small railway) which was constructed specifically for the purpose of building the cathedral. The iconostasis covers the whole east wall and the holiest place in the cathedral, the altar, is situated behind it.