 They include what were originally customs and border control posts.This was the only route open between Russia and Germany in World War I, and during World War II many of the approximately 80,000 Finnish children evacuated to Sweden entered the country here.75,000 WWI prisoners of war who so badly injured that they were exchanged between the warring sides and 27,000,000 kg of mail, mostly from or to prisoners of war, was sorted at Haparanda.