Kruikenburg Castle is a listed building in the village of Ternat. It was the seat of the lordship of Kruikenburg, which included the villages of Ternat, Sint-Katarina-Lombeek and Wambeek. A medieval foundation, the castle was extensively remodelled in the 16th and 18th centuries, giving it its current appearance. In 1662 the lord of Kruikenburg was elevated to the title of count. In the 20th century the castle became a house of the Lassalian Brothers.
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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.