Fort Carré - Antibes, France

"Fort Carré, often Fort Carré d'Antibes, is a 16th-century star-shaped fort of four arrow-head shaped bastions, that stands on the outskirts of Antibes, France. Henri de Mandon built the fort and then during the 17th century, the Marquis de Vauban redeveloped it. The Romans probably built the first fortifications at Antibes. In 1553, a tower called la tour Saint-Florent was built around a preexisting chapel. Henry III had four bastions added in 1565, whereupon it became Fort Carré (the squared fort). The construction has been finished 25 years from its beginning. During the French Revolution, Napoleon Bonaparte was briefly imprisoned here. In July 1794, after the violent overthrow of Robespierre, General Bonaparte was detained as a Jacobin sympathizer and held in Fort Carré for ten days. His friend and political ally, Antoine Christophe Saliceti, secured his release." - https://en.wikipedia.org/wiki/Fort_Carr%C3%A9