The present castle of Pfedelbach was built from 1568 to 1572 as a winter residence by the count of Hohenlohe-Waldenburg. While additions and alterations to the castle were made, the original design stayed largely intact. Inside the courtyard a few baroque elements can be seen intermingling with the characteristic 16th-century architectural style.
Today, the Schloß Pfedelbach is home to the city's Bürgersaal and several apartments. The castle chapel has been lovingly preserved, and still serves as a venue for weddings and concerts.
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.