 Due to the strategic importance of the intersection, a medieval fortification Grådö skans was built, itself a precursor to Borganäs in Borlänge.On March 29, 1520, during the Swedish war of liberation, the Danish army defeated rebelling Swedes at the battle of Badelundaåsen.More than a year later, on April 29, 1521, the battle of Västerås took place at Badelundaåsen east of Västerås, after which Gustav Vasa wrested Västerås from Danish control.