Utti Fortress

Utti Fortress is a bastion fortress in Utti, Finland. It was built in 1790s as a part of a larger South-Eastern Finland fortification system to protect Saint Petersburg, the capital of Russian Empire.

The fortress was built around the area of the Battle of Utti that was fought during the Russo-Swedish War in 1789. During the battle, Russians had noted that the narrow passage between the Haukkajärvi lake and the Haukkasuo bog was suitable for a fortress, as it was difficult to bypass.

Construction process started in 1791 and finished in 1792. Around 1100 men took part in the construction, some being from the military and some from the countryside nearby.

Source: Wikipedia