Bifröst (an. bifröst, 'swaying skyway'), Bilröst, Beberast or Asbru (an. ásbrú, 'Asenbrücke') is in Norse mythology the three-beam rainbow bridge between Midgard and Asgard and thus the connection between the "earth world" and the "kingdom of heaven".
According to the Grímnismál (stanza 44), the Aesir Bridge is the first of all bridges and is guarded by the Aesir god Heimdall. The Aesir use it to get from Asgard to Midgard as well as to their daily meetings at the Urd well.
The Snorra Edda also states that a red fire burns on the bridge to keep the Hrimthursen (ice giants) and mountain giants from crossing it.
During the end of the world Ragnarok, Bifröst will be destroyed by the fire giants of Muspellheim when they cross: But strong as it is, it will break when Muspel's sons come to ride over it.
Bifrost in Popular Culture
The Bifröst appears in the film Erik, the Viking by Terry Jones, released in 1989.
The Bifröst appears in the films Thor (2011), Thor: The Dark World (2013) as well as Marvel's Thor: Ragnarok (2017).
The Bifröst is mentioned in the Avengers (2012) and Avengers: Infinity War (2018) movies also from Marvel.
In the game Valkyrie Profile 2: Silmeria (2006), the player can go to the Bifröst and will have to fight the boss of this place who is its guardian, Heimdall.
Bifröst is the name of an Austrian Pagan Metal band.
Bifröst also appears in the Lego Marvel Super Heroes game (2013) in the mission "Bifrosty Reception".
Bifrost is a legendary staff in the game Guild Wars 2, released in 2012.
Bifrost is a French-language science fiction literary magazine, founded in 1996.
Bifröst is a staff that can bring the dead back to life in the game Fire Emblem Fates (2015).
In God of War (2018), the Bifrost is the name of the device Kratos uses to travel between different divine planes via the world-tree.