Fornsigtuna
Fornsigtuna (forn means ancient), Old Sigtuna, Sithun, Sign(h)ildsberg or Signesberg (59°37′N 17°39′E / 59.617°N 17.650°E) is located in the parish of Håtuna approximately 4 kilometres (2.5 mi) west of the modern town of Sigtuna, by lake Mälaren, in Sweden. Although the location is nearly forgotten, it has a central role in Norse mythology.
In Chapter 5 of the Ynglinga saga section of his Heimskringla, Snorri Sturluson relates that Odin and the Æsir first arrived at Old Sigtuna when they came to Sweden:
Later the pirate Sölve arrived at Old Sigtuna to claim the Swedish throne:
In the part called The Saga of St. Olaf, the Norwegian king Olaf Haraldsson makes shore at Old Sigtuna:
In Orvar-Odd's saga, Hjalmar laments his dying:
The location is also mentioned in other poems by the 11th-century skalds Þjóðólfr ArnórssonValgarðr á Velli and Arnórr Þórðarson.
Saxo Grammaticus writes in Book 8 of Gesta Danorum that Sigmund, one of the warriors of the House of Yngling, came from what is chronologically Old Sigtuna to fight at the Battle of Bråvalla:
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