 It is the location where both the E45 motorway, a railway and the historic Danish Army Road, "hærvejen", cross the border.Located a few kilometres northwest of Schleswig's historic commercial centre, Flensburg, Padborg was a small settlement when the region returned to Danish rule in 1920 following a plebiscite, but grew rapidly in size after the establishment of the current border.It is a transport centre and railway town.