In Norse mythology, Valhalla (from Old Norse Valhöll "hall of the slain") is a majestic, enormous hall located in Asgard, ruled over by the god Odin. Chosen by Odin, half of those who die in combat travel to Valhalla upon death, led by valkyries, while the other half go to the goddess Freyja's field Fólkvangr. In Valhalla, the dead join the masses of those who have died in combat known as Einherjar and various legendary Germanic heroes and kings, as they prepare to aid Odin during the events of Ragnarök. Before the hall stands the golden tree Glasir, and the hall's ceiling is thatched with golden shields. Various creatures live around Valhalla, such as the stag Eikþyrnir and the goat Heiðrún, both described as standing atop Valhalla and consuming the foliage of the tree Læraðr.
Valhalla is attested in the Poetic Edda, compiled in the 13th century from earlier traditional sources, the Prose Edda, written in the 13th century by Snorri Sturluson, Heimskringla, also written in the 13th century by Snorri Sturluson, and in stanzas of an anonymous 10th century poem commemorating the death of Eric Bloodaxe known as Eiríksmál as compiled in Fagrskinna. Valhalla has inspired various works of art, publication titles, popular culture references, and has become a term synonymous with a martial (or otherwise) hall of the chosen dead.
The Modern English noun Valhalla derives from Old Norse Valhöll, a compound noun composed of two elements: the masculine noun valr 'the slain' and the feminine noun höll 'hall'. Valr has cognates in other Germanic languages such as Old English wæl 'the slain, slaughter, carnage', Old Saxon wal-dād 'murder', Old High German 'battlefield, blood bath'. All of these forms descend from the Proto-Germanic masculine noun *walaz. Among related Old Norse concepts, valr also appears as the first element of the nouns valkyrja 'chooser of the slain, valkyrie' and Valfreyja, one of the goddess Freyja's several names.