Archaeology
There are two large ruins that formerly were two large three-aisled halls, a series of terraces just above the shore-line of the Germanic Iron Age, traces of a harbour, a large mound and a number of smaller grave fields. Excavations have dated the remains to the Vendel Age, part of the Germanic Iron Age, and the Viking age, i.e. from the 6th century until the 11th century.
Read more about this topic: Fornsigtuna