The Great Church (Grote Kerk) dates from the 15th century. Prior to the Protestant Reformation it was named for St. Vitus. It survived the Spanish invasion of 1572 and the subsequent burning of the town. The church has numerous wooden vaults that are painted with scenes from the Old and New Testaments. These were hidden for many years and were only rediscovered in a recent restoration. The church is the venue for a number of cultural activities such as organ music nights and the bi-annual Naarden Photo festival.
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.