Edda Snorra Sturlusonar
Snorri gives us an overall description of the Nordic religion and the ancient stories, rituals and visions which were dissapearing from memory in the 13th century. He lets an ancient Nordic king see and experience Asgard as a mirage, where Gylfi asks three gods about occurences and accomplishments by the Æsir.
Snorri explains how the world was created, how man was created and how society was organised. Here is the great cosmic tree, Yggdrasil, which holds everything up and which ties together Heaven, Earth and the Underworld into one unit. In the centre we have the story of Baldur, the god who is killed by the advice of deceitful Loki and this deception and death signals the end of all and the final downfall. In the final battle gods and giants battle and the world is destroyed in the fire of the world.