The Margravial Opera House is a Baroque opera house built between 1744 and 1748. It is one of Europe's few surviving theatres of the period and has been extensively restored. In 2012 the opera house was inscribed in the UNESCO World Heritage List.
It was built according to plans designed by the French architect Joseph Saint-Pierre (de) (ca. 1709 – 1754), court builder of the Hohenzollern margrave Frederick of Brandenburg-Bayreuth and his wife Princess Wilhelmine of Prussia. It was inaugurated on the occasion of the marriage of their daughter Elisabeth Fredericka Sophie with Duke Charles Eugene of Württemberg.
The wooden interior was designed by Giuseppe Galli Bibiena (1696 – 1757) and his son Carlo from Bologna in an Italian Late Baroque style. The box theatre is completely preserved in its original condition, except for the curtain which was taken by Napoleon's troops on their march to the 1812 Russian campaign. The prince box was seldom used by the art-minded margravial couple, who preferred a front-row seat.
Princess Wilhelmine, older sister of the Prussian king Frederick the Great, had established the margravial theatre company in 1737. In the new opera house she participated as a composer of opera works and Singspiele', as well as an actor and director. Today she features in a sound-and-light presentation for tourists. After her death in 1758, performances ceased and the building went into disuse, one reason for its good conservation status.
More than one hundred years later, the stage's great depth of 27 metres attracted the composer Richard Wagner, who in 1872 chose Bayreuth as festival centre and had the Festspielhaus built north of the town. The foundation stone ceremony was held on May 22, Wagner's birthday, and included a performance of Beethoven's Symphony No. 9, directed by the maestro himself.
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.