Tradition dates the foundation of the monastery in Verrès to the 10th century, however the canonicals of St. Egidio are mentioned for the first time in 1050. It was the location of the parish church, which includes buildings dating from the 11h and 18th centuries. The main building, in visible stone, and the adjacent, main bell-tower were built in 1512 by the Provost Charles of Challant.
The current parish church of Sant’Egidio was instead built in 1775 on the site where the previous, Romanesque church lay. Only a simple, little belfry remains today. In 1775 Count Francesco Ottavio of Challant allowed the structures of the pre-existing church to be merged with the Chapel of Saints George and Maurice, built in 1407 by the knight Ibleto of Challant as his family’s burial chapel. The structures in this chapel are still easily identified today, from outside due to the magnificent mullioned window in worked stone that stands out on the wall facing towards the village and inside due to its gothic, ribbed vaults which were saved from eighteenth-century intervention.
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.