Fort Vauban refers to a series of fortifications designed by the French military engineer Vauban in the 17th century. These forts were built to protect France's borders and key cities from invasions. Characterized by their star-shaped designs, they utilized advanced military architecture for their time, incorporating features like bastions and moats. Many of these forts are now recognized as UNESCO World Heritage Sites, showcasing their historical significance. Fortifications like Fort Saint-Nicolas and Fort de la Conchée exemplify Vauban's innovative approach to military defense, blending functionality with aesthetics in their construction.