This is one of comparatively few castle hills along the banks of the Daugava River that is not overgrown with trees and bushes, which means that it has a classical castle hill form that is part of the local landscape.  The Dignāja castle hill was settled during several periods, particularly between the 5th and the 9th century AD, when it was an important centre.  Archaeologists have found that Lettigalian tribes lived here.  After the Holy Crusade invasion, the Livonian Order built a castle on the hill that has not survived.  It is said that there was once an underground passageway under the hill.  The hill itself offers a lovely view of the Daugava River valley.  World War I trenches have been preserved the area.  There was once a settlement at the foot of the hill.