Norse mythology is a collection of Scandinavian oral traditions that functioned as a belief system for the Nordic people prior to the introduction of Christianity. The major elements of this mythology include a creation legend, along with a pantheon of Norse gods and the legends associated with them. These myths also include heroic sagas that describe the feats of great human warriors and their struggles. Some aspects of Norse myths are similar to Greek legends and beliefs, although the Norse traditions reflect a much darker and pessimistic worldview. Much of Norse mythology was lost when Scandinavia was Christianized during the Middle Ages.
According to the Norse creation legend, the world was made from the body of a giant by three gods, Odin, Vili and Ve. These gods killed the giant and used various parts of his body to create the ocean, land, mountains and sky. The three gods later created the first man and woman from an ash tree and an elm tree. The world was divided into two realms, Midgard, home to the humans, and Asgard, home to the gods. The link between these two realms is known as Bifrost Bridge.
Much like the Greek pantheon, Norse mythology includes a number of powerful deities who rule over Asgard. These deities are known as the Aesir, and they are led by Odin, the wisest and most powerful of the gods. Odin’s wife, Frigg or Frigga, is the goddess of marriage and fertility. Thor, who wields a mighty hammer and can produce lighting and thunder, is another well-known Norse deity. The ancient Norse believed the actions of the Aesir influenced the world around them and used these supernatural beings as an explanation for events such as earthquakes and storms.
The Aesir had a number of powerful enemies, which were destined to defeat them in a series of battles known as Ragnarok. These enemies included evil giants and dwarves, as well as a great serpent and a wolf that would help kill the gods at the last battle. The trickster god, Loki, who lived among the Aesir for a time before being imprisoned, was the son of giants and predestined to fight against the gods. Much of Norse mythology concerns the decline of the Aesir and their grim determination in the face of Ragnarok.
Norse mythology also includes a number of sagas about legendary heroes and mythical creatures. These sagas are often about bloody struggles and end with the protagonist's heroic death, reflecting the Norse beliefs about the end of the world. These sagas had a heavy influence on English and German epics such as Beowulf and Richard Wagner’s Ring Cycle.