The Château Saint-Sixte is a 12th-century castle in the commune of Freistroff. It stands on a small plain between Freistroff and Rémelfang. It was built in the 12th century by the seigneur Wirich de Valcourt.
During the Renaissance, it was transformed into a residence and was altered again in the 18th century. It was saved from ruin by the Gehl family in 1986. Separated from the village on the left bank of the Nied, it has a strange oval plan, surrounding by ancient moats. The six originally separate buildings are roofed with two slopes of tiles and arranged around an entirely enclosed courtyard. In each corner, a polygonal staircase tower gives access to the upper storeys.
On weekends and public holidays, the owners offer guided tours.
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.