The Golden Apples of Idunn grow only in Asgard, and can only be picked by the goddess Idunn. They are what grants the Asgardians their youth, vigor, and virtual immortality.^[5] They grew on a tree in a garden on the east side of Hall of Valhalla in Asgard.^[6]

At one point they were stolen by the Storm Giants and had to be retrieved by Thor and Loki.^[7]

In Germany, in April, 1945, Nazi Thule Society magician Dr. Gottschalk somehow acquired Golden Apples of Idunn, who intended to keep them for himself, as the war went badly. ^[2]