Mata Bejid Castle is a rectangular fortress built originally during Muslim era. It has two towers on both sides, quite deteriorated, the one on the North consists of an interior room covered with a pointed vault (keep), and the one on the South has a low solid body and the upper one habitable. The castle is divided into two large areas, the main square (it was converted in recent times into a farmhouse, of which the arches of the zahúrdas that overlooked this large courtyard are preserved) and the Islamic fortress (a higher niver with respect to to the rest of the castle).
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.