The Kalmar Union was a historical consisting union of the kingdoms of Denmark, Norway and Sweden, and various other provinces and areas. At that time, Norway included Iceland, Greenland, the Faroe Islands, Shetland, Orkney, and parts of Finland belonged to Sweden. The union was started in 1397 at a meeting in the town of Kalmar in Sweden. The union ended on 6 June 1523 when Sweden left the union by Gustav I.