Saint-Malo Cathedral (Cathédrale Saint-Vincent-de-Saragosse de Saint-Malo) is a Roman Catholic cathedral dedicated to Saint Vincent of Saragossa. It was formerly the seat of the Bishop of Saint-Malo. The cathedral was built in 1146 when Jean de Châtillon, Bishop of Aleth, transferred his bishopric to the growing town of Saint-Malo on a more secure site across the river. The Benedictine monastery of Saint Malo, founded in 1108, became the home of the bishopric and its church the new cathedral, replacing Aleth Cathedral.
Saint-Malo Cathedral has undergone several transformations so you will see Romanesque, Gothic, High Gothic and Renaissance styles. However, in 1944 during a battle for the city the cathedral was bombed and the choir section collapsed. It took over 20 years to make the repairs.
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.