Map of Birka, Sweden
Own work

partly based on File:Birka Karte 2008.jpg
Some informations from Charlotte Hedenstierna-Jonson, The Birka warrior : The material culture of a martial society, Stockholm university, 2006 (ISBN 91-89338-15-4)
Some symbols from File:Maps template-fr.svg
Silverkey (Mickaël Delcey)