Näs church was built in the middle of the 13th century, and remains today largely unchanged. The interior was changed during a renovation made in 1910, and according to tradition the tower was originally higher. However, few of the original furnishings have survived.
The altarpiece dates from 1692, and made in Burgsvik, while the pulpit is from the middle of the 18th century. The triumphal cross is a copy of a medieval crucifix, but a few fragments of an original triumphal cross survive in the Gotland Museum in Visby. In the sacristy, fragments of a medieval tombstone are also stored; the fragmentary picture on the tombstone may possible depict a bishop.
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.