In the early 9th century a small keep was built on a mound on a peninsula on the Giecz lake; fortified with a stockade and earthworks, it was one of the key strongholds of the early Piast dynasty.
A small keep was built on a mound on a peninsula on the Giecz lake. This was in the early 9th century. It was fortified with a stockade. It was fortified with earthworks. It was one of the key strongholds of the early Piast dynasty.