Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Birka and Hovgården' has mentioned 'Fortress' in the following places:
Occurrence Sentence Text Source
Contents 1 History 2 Rimbert's description 2.1 Bridgehead of Christian missionaries 2.2 Kings 2.3 Church 2.4 Probable fortress 2.5 Ting assembly 3 Adam of Bremen's description 3.1 Location and port 3.2 Bishop 3.3 Location of Unni's tomb 3.4 Destruction 4 Bjxc3xb6rkxc3xb6 archaeological site 5 See also 6 References 7 External links
Probable fortress[edit]
As the neighbouring "city" is not mentioned in any other context than during the Danish attack as a place where people took refuge, it probably meant a nearby fortress.
The remains are both burial-sites and buildings, and in the south part of this area, there is also a hill fort called "Borgen" ("The Fortress").