Ulko Island, Finland

Located in the eastern part of the Gulf of Finland, about 30 kilometres from the city of Hamina, the island of Ulko-Tammio is less than 10 kilometres from the Russian border. The island was uninhabited for a long time and only used as pasture for the nearby village on Tammio Island. Originally, Ulko-Tammio Island consisted of two smaller islands. Between these islands, the approximately ten metre wide neck of land was filled in from 1939 to 1944, during the Winter- and Continuation Wars.

Ulko-Tammio Island is currently uninhabited. The secluded island hides many wartime remains, including two museum cannons, cannon stands, trenches, ammunition stores, as well as an approximately 70-metre long cave designed to protect personnel. The cave can be explored, but you should take a flashlight with you. Memorial plaques and soldiers' graves tell of the wartime ordeals.