Glæsisvellir

Glæsisvellir was a location in Jotunheim in Norse mythology. It is mentioned in sources such as Bósa saga [ok Herrauds], Hervarar saga, Þorsteins [þáttr bæjarmagns] and Helga þáttr Þórissonar.

Legend

In Glæsisvellir could be found a location called Ódáinsakr, or Údáinsakr. Everyone who went there became healthy and young, and so no one ever died there. The Eireks saga víðförla is about a man who searched for and found Údáinsakr.
In the Hervarar saga, it is the kingdom of Gudmund and his son Höfund. Gudmund was a friendly jötunn who was popular in later sagas.
In Gesta Danorum, Saxo Grammaticus makes a reference to Odainsaker as the place where the Scanian governor Fialler retired after having been attacked by the Danish king Wiglek: