Château de Gréolières was mentioned first time in 1047 when it belonged to the Viscounts of Nice. Counts of Provence decided at the end of the 12th century to enforce eastern part of Provence against the influence of the Republic of Genoa and local nobility. To control the area of Gréolières, the Count of Provence built the new castle around 1220.
In 1235 Count of Provence gave the castle to Romée de Villeneuve. The castle remained in the hands of his descendants, the lords of Villeneuve-Vence, until the French Revolution. The castle and the village were plundered in 1385 during the clashes between Charles de Duras and Louis II of Anjou.
During the Wars of Religion, in 1574, the castle was attacked by Huguenots and again in 1590 by Duke of Savoy. The castle was restored in the early 17th century, but bombed again during the War of Austrian Succession in 1747 by the Austro-Sardinian troops.
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.