A star-shaped fortress is a type of military fortification designed in the shape of a star. This design allows for better defense against attacks, as the points of the star provide multiple angles for firing weapons. The layout also minimizes blind spots, making it easier to spot approaching enemies. These fortresses became popular during the Renaissance period, particularly in Europe. Notable examples include the Citadel of Vauban in France and the Star Fort in Bastogne, Belgium. The star shape was effective in resisting cannon fire, which was prevalent during that time.