Batenburg Castle construction was probably started around the year 1300. The castle was rebuilt in 1600 on the foundations of an earlier structure; The present castle was destroyed by fire in 1795 and is now preserved as ruins: the ring wall with towers, the remains of three extended round towers with a basement underneath and the remains of the gatehouse. These are flanked by semicircular towers, all built with limestone brick.
References:Sigmaringen Castle was first mentioned in the year 1077 in the chronicles of Petershausen monastery. The oldest parts of the castle are concealed beneath the alterations made during the 17th and the 19th centuries. The secret of the earliest settlement built on this defendable rock will never be fully revealed: large-scale excavation work would be necessary, which the extensive land development renders impossible. Judging from the many Roman remains unearthed in the area around Sigmaringen, the 12th century keep known as the 'Roman Tower' could be traced back to a Roman predecessor.
The castle remains that have been preserved (gate, great hall and keep) date back to the Staufer period around 1200. The castle remains were integrated into subsequent buildings. The foundations of the castle buildings are to a large extent identical to the surrounding castle wall.
These remains give us a good idea of how the castle might have looked during the 12th century.