At the bank of Fyris River, there is a small moraine hill which does not look like much to the eye. However, it covers one of the most important Viking-era archaeological sites ever excavated. Between the 5th and 11th centuries AD, this site was used as a burial site. Archaeologists have discovered some 90 graves, including 15 lavish boat burials. Since the same site was used continuously for such a long time period, archaeologists use its findings to compare how the same culture developed over time. Today, there are no noticeable remnants at the site. These can be found at the University museum Gustavianum, in central Uppsala. However, you can still visit Valsgärde to appreciate its beautiful landscape and historical atmosphere.