The oldest part of the Etelhem Church is a tower, built in the beginning of 1200s. The nave and choir were built around 1300 and sacristy added in 1600s. The interior is decorated with mural paintings made in the 1400s. The well-preserved stained glass in choir window dates from the 1300s. The font was made of sandstone in the late 1100s and wooden crucifix was carved in 1300s. The pulpit dates from 1648 and altar from 1690.
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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.