Wallraf-Richartz-Museum houses the most extensive collection of medieval Cologne paintings, apart from the Old Pinakothek in Munich, as well as precious works from the time around 1500. Flemish and Dutch masters of the 16th to the 18th century, Rembrandt and Rubens included, are also represented as is a collection of German and French paintings from the beginnings of the modern era until 1900.
The foundations for the museum were laid by Main Attractions 28 the collector Ferdinand Franz Wallraf. The first museum building was constructed in the mid-19th century by the Cologne merchant Johann Heinrich Richartz.
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.