The oldest part of the St. James parish church is the tower chapel (10th century) with two compact columns and cube-shaped capitals (Chapel of Grace today). The church was erected in the 12th century as the result of a vow made by Engelhard Brömser who had promised to build a church if he returned home safely from his captivity by the Moors. The Gothic hall church from the 14th/15th century is also a gift from the Brömser family. It was completely renovated in 1719. In 1766 a 'pigtail helmet' (onion tower) was added to the Romanesque church tower and a Baroque high altar was installed. An ambitious expansion of the parish church was carried out in 1913-1914. On 25 November 1944, the church was almost completely destroyed during a heavy bomb attack. Immediately after World War II, work began to rebuild the church as a hall church incorporating the preserved old parts. St. James' Church was consecrated in 1955.
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.