Glæsisvellir (Glittering Plains) 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 (lit. "Deathless Acre", meaning the "Undying Lands"). 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:

Other sources