The Aleppo Citadel is a historic fortress located in the city of Aleppo, Syria. It is one of the oldest and largest castles in the world, with origins dating back to the 3rd millennium BC. The citadel is situated on a hill, providing a strategic vantage point over the surrounding area. Its impressive architecture features thick stone walls, towers, and a large entrance gate. Throughout its history, the Aleppo Citadel has served various purposes, including military defense and royal residence. It has witnessed numerous battles and changes in power, reflecting the rich history of Aleppo itself. Today, it is a UNESCO World Heritage Site and a popular tourist attraction.