King Eric and the Outlaws, Vol. 1

On the north-eastern coast of Zealand, about two miles from Gilleleié, is situate the village of Sjöberg, where the spade and the ploughshare occasionally strike against the foundations of ancient buildings, and traces yet remain of the paved streets of towns, the names of which are no longer known, and over which the corn now grows or the cattle graze. Towards the close of the thirteenth century there was still standing a small town, built on the ruins of the ancient Sjöberg. On a hill, surrounded by the water-reeds of the now nearly dried-up lake, fragments of walls of hewn free-stone lie buried in the earth, and mark the site of the strong and well fortified castle, which in the thirteenth and fourteenth centuries served as a place of confinement for state prisoners of importance. The spot on which the castle stood was then entirely surrounded by the lake, which thus formed a natural fastness, rendering artificial moats superfluous. The castle was surrounded by ramparts. It was built of massive free-stone, and had a strong square tower, in which the most dangerous state prisoners were confined.