Fortified cities are urban areas that have been strengthened with defensive structures to protect against attacks. These cities often feature walls, towers, and gates designed to deter invaders. Historically, they were built during times of conflict to provide safety for inhabitants and resources. Many fortified cities, such as Carcassonne in France and Dubrovnik in Croatia, showcase impressive architecture and strategic designs. These cities often include moats and bastions, which enhance their defensive capabilities. Today, many fortified cities are popular tourist destinations, offering a glimpse into historical military architecture and urban planning.