Imatra is a town and municipality in eastern Finland, founded in 1948 around three industrial settlements near the Finnish–Russian border. In the course of the last 50 years, this amorphous group of settlements has grown into a modern industrial town dominated by Lake Saimaa, the Vuoksi River and the border. It gained its municipal charter in 1971.On the other side of the border, 7 kilometres (4 mi) away from the centre of Imatra, lies the Russian town of Svetogorsk.