Sääminginsalo has been said to be the largest true island of Finland (area 1,069 km² or 413 sq mi). If it is considered as an island, it is the third largest island in a lake in the world. This inland island is located in Southern Savonia region, Eastern Finland and is surrounded by the lake Greater Saimaa (Haukivesi, Puruvesi and Pihlajavesi), and an artificial canal, Raikuun kanava, that was built in 1750s.