With its commanding position alongside the River Moselle, located at the junction of the three main Roman roads and at the end of the Trans-Burgundy highway, Châtel played a strategic role throughout its long history up to 1940-44 during World War II.
From the year 1072 until 1373, it belonged to the Earls of Vaudémont, related to the House of Lorraine. It then became the property of a most prominent Burgundian family, the Lords of Neufchâtel, after the wedding of daughter Alix de Vaudémont with Thiebaut VII of Neufchâtel-Burgundy.
It became the centre of a wide territory which supported the Burgundian cause for years. In 1544, the House of Lorraine gained possession of Châtel, thus ending a legal wrangling between Elisabeth of Neufchâtel's heirs. Then the fortress stood up against the French invasion during the Thirty Years' War and changed hands nine times.
It was finally completely dismantled in 1671 on Louis the XIV's orders.
Built on the edge of a jutting limestone promontory alongside the Mosel River, surrounded by dry ditches 58 m wide, the castle dominated the medieval town and its surrounding walls with its twelve towers and two main gates.
The first structure, built during the 11th and 12th century, showed a single rectangular keep. It was enlarged during the 13th century and further extended in the 15th century to become one of the most important places in the area, with a unique attempt to match the evolving needs of modern artillery.
Two curtain walls, with a total combined length of about one mile (1.4 km), comprised not less than 22 towers. A sophisticated network of storerooms and galleries completed the fortress' defenses and allowed communication between the castle, the town downwards, and the river banks.
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.