Église Saint-Pantaléon Church was built in the 12th century. The first patron saint was saint Himère. After the epidemic of plague between the years 1337 and 1348, saint Pantaleon was chosen as saint patron. In 1835 as the church was too small, a new one was built. But from 1850, many cracks in the walls appeared. In 1874 and 1878, a new church was built with a larger nave. The roman bell tower was preserved. Behind the church, there are some archways from an old chapel Saint-Michel, which was an ossuary.
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.