Sorunda church is an unusually large, medieval church. Its history goes back to the 12th century with major additions made in the 15th and 16th centuries (the current exterior dates mainly from 1540). The church contains burial chapels for local aristocratic families and several interior details dating from the Middle Ages, notably an unusually fine wooden sculpture by Herman Rode. The altar screen dates from the late 1400s and is probably made by Bertil Målare's workshop.
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.