Norse cosmology focuses on how the Norse people perceived the cosmos and their place in it. It includes their creation myths, the nine realms of the universe, and their perception of the inevitable end of both humanity and the gods in the form of Ragnarok.
Yggdrasil
was the mythical ash tree that supported the Nine Realms of Norse mythology, giving structure to the cosmos. It was the source of ultimate wisdom, where the god Odin sacrificed mightily to gain knowledge and power.
Valhalla
was the magnificent home of the gods, where those warriors claimed by the Valkyries were brought to drink, feast, and fight in the afterlife. When Ragnarök came, those warriors would do battle against the jötnar.
Ginnungagap
, in Norse cosmology, was the empty space that existed between the fires of Muspelheim and the ice of Niflheim. The gods used the body of the tyrannical giant Ymir to create new realms within the massive void.
Hlidskjalf
was the magical throne of the Norse god Odin, offering its occupant a vantage into every part of the Nine Realms. Often joined there by his wife Frigg, they could see whatever they wished from this lofty pinnacle.
Bifrost
was the shimmering rainbow bridge that connected the Norse realms Asgard and Midgard. Guarded by the god Heimdall, whose eyes never closed, it was fated to fall after the jötnar’s invasion during Ragnarok.
Folkvangr
, domain of the Norse goddess Freya, was a meadow where half of all who died in battle spent the afterlife. She dwelled in Sessrumnir, a hall built in the shape of a ship, mimicking actual Norse burial customs.