|At the end of th 1980th. archeologists found remains of a viking fort. It was measured to 125 meters in diameter and was constructed in the year around 980.|
It's similar to the forts allready found in Denmark: Trelleborg at Slagelse, Aggersborg at the Limfjorden, Fyrkat at Hobro and Nonnebakken in Odense.
1/4 of it today is visible and was rebuild the way experts think it and the other forts looked like during the viking age.