Wikipedia
Álfheimr
Alfheim (, "Land Of The Fairies"), also called Ljosalfheim (Ljósálf[a]heimr, "home of the light-elves"), is one of the Nine Worlds and home of the Light Elves in Norse mythology.
Álfheimr (region)
Alfheim (, "elf home" or "land between the rivers.") is an ancient name for an area corresponding to the modern Swedish province of Bohuslän and the eastern half of the Norwegian province of Østfold.