During the Thirty Years War, the Spanish occupied the island and constructed the fort from 1635 to 1637. After the Spanish were defeated, the French army completed the area's fortification. A prison was added to its military function in 1637 which lasted until the twentieth century. Listed as a Historical Monument in 1927, the fort lost its military value by a downgrading in 1944. It was acquired by the City of Cannes in 1995.
Today, the fort welcomes visitors within its walls, in its museum and groups of youngsters in its barracks for sports, heritage and ecological trips.Guided tours of Fort Royal are available from June to September.