The Citadel of Aleppo is the most famous and most important tourist attraction in the city. It is considered one of the largest and oldest castles in the world. It is also located on a hill that provides an amazing view of the various parts of the city. The history of the construction of this castle dates back to ancient times. It consists of a huge building with doors, corridors, defense halls, and ammunition rooms. It also includes a number of towers dating back to different civilizations inhabited through the ages, in addition to the throne room with its beautiful inscriptions and stone decorations. It should be noted that this castle was included in the list of UNESCO World Heritage Sites in 1986 AD.