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:The Walls of Constantinople are a series of defensive stone walls that have surrounded and protected the city of Constantinople (today Istanbul) since its founding as the new capital of the Roman Empire by Constantine the Great. With numerous additions and modifications during their history, they were the last great fortification system of antiquity, and one of the most complex and elaborate systems ever built. They were also the largest and strongest fortification in both the ancient and medieval world.
Initially built by Constantine the Great, the walls surrounded the new city on all sides, protecting it against attack from both sea and land. As the city grew, the famous double line of the Theodosian Walls was built in the 5th century. Although the other sections of the walls were less elaborate, they were, when well-manned, almost impregnable for any medieval besieger.