Suomenlinna, a fortress built over 6 islands in the 18th century, at a time when Finland was part of Sweden. Main gate of the fortress. Main gate of the fortress. Suomenlinna Church, originally an orthodox church built by the Russians in 1854, and converted into an evangelical Lutheran church in 1929. Channel between two of the islands of the fortress. Dockyard, built in 1747. Dockyard, built in 1747. Dockyard, built in 1747. Senate squareTemppeliaukio church Labels