Citadel

A citadel is a fortified structure or stronghold, typically built to protect a city or important area from attacks. It often includes walls, towers, and other defenses, serving as a secure refuge for inhabitants during conflicts. Historically, citadels were strategically located on high ground for better visibility and defense. They played a critical role in military architecture and urban planning, symbolizing power and security. Today, many citadels are preserved as historical sites, offering insight into past civilizations and their defensive strategies.