Bayeux Cathedral is a Norman-Romanesque style cathedral built originally in the 11th century. It was the original home of the Bayeux Tapestry and is a national monument of France. The site is an ancient one and was once occupied by Roman sanctuaries. The present cathedral was consecrated on 14 July 1077 in the presence of William, Duke of Normandy and King of England. It was here that William forced Harold Godwinson to take the oath, the breaking of which led to the Norman conquest of England.
Following serious damage to the Cathedral in the 12th century, the Cathedral was rebuilt in the Gothic style which is most notable in the crossing tower, transepts and east end. However, despite the crossing tower being started in the 15th century, it was not completed until the 19th century. The interior was destroyed during the Wars of Religion in 1562 and restored in 1589.
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.