place
Bilskirnir and Þrúðvangr
Bilskirnir
Thor's hall, with five hundred and forty rooms, the greatest house ever built; it stands in his land of Þrúðvangr, 'strength-field'.
Bilskirnir is Thor's hall. Odin, speaking in Grímnismál, gives its size and his opinion of it: "Five hundred rooms and forty there are / I ween, in Bilskirnir built; / Of all the homes whose roofs I beheld, / My son's the greatest meseemed" Grímnismál 24.
Snorri agrees that it is "the greatest house that men know of" and places it in Thor's realm, Þrúðvangar Gylfaginning 21. Grímnismál calls the land Þrúðheimr, "strength-home": "Thor shall ever in Thruthheim dwell, / Till the gods to destruction go" Grímnismál 4. Both names contain þrúðr, strength, which is also the name of Thor's daughter Þrúðr Skáldskaparmál 4.
Snorri quotes the stanza in a different version from the one Bellows translates: "Five hundred floors / and more than forty, / So reckon I Bilskirnir with bending ways" Gylfaginning 21. The number 540 is the same as the count of Valhalla's doors in the previous stanza of the poem Grímnismál 23. Readers have often noted the parallel between Odin's hall and his son's.
Thrúðvangar is where Thor goes home to in Snorri's stories: after his visit to Útgarða-Loki Gylfaginning 47, and after the duel with Hrungnir, with the whetstone still in his head Skáldskaparmál 17. Skalds called Thor the "Lord of high Bilskirnir" Skáldskaparmál 4.
In the sources
Quoted from the hosted translations; each line is checked against the text when the site is built. Select a reference to read it in context.
Five hundred rooms and forty there are I ween, in Bilskirnir built; Of all the homes whose roofs I beheld, My son's the greatest meseemed.
And Thor shall ever in Thruthheim dwell, Till the gods to destruction go.
He has his realm in the place called Thrúdvangar, and his hall is called Bilskirnir; in that hall are five hundred rooms and forty. That is the greatest house that men know of